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    [Appendix]
    [Detailed Budget Estimates by Agency]
    [National Aeronautics and Space Administration]
    [From the U.S. Government Publishing Office, www.gpo.gov]

             <h1>NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

             </h1>

          NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

          Federal Funds
             ScienceFor necessary expenses, not otherwise provided for, in the conduct and support of science research and development activities,
                including research, development, operations, support, and services; maintenance and repair, facility planning and design;
                space flight, spacecraft control, and communications activities; program management; personnel and related costs, including
                uniforms or allowances therefor, as authorized by sections 5901 and 5902 of title 5, United States Code; travel expenses;
                purchase and hire of passenger motor vehicles; and purchase, lease, charter, maintenance, and operation of mission and administrative
                aircraft, $5,865,000,000, to remain available until September 30, 2020.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0120–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Science
                      5,799
                      5,726
                      5,865

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      301
                      298
                      361

                      1021
                      Recoveries of prior year unpaid obligations
                      34
                      63
                      60

                      1050
                      Unobligated balance (total)
                      335
                      361
                      421

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      5,765
                      5,726
                      5,865

                      1120
                      Appropriations transferred to other accts CECR [080–0130]
                      –3

                      1160
                      Appropriation, discretionary (total)
                      5,762
                      5,726
                      5,865

                      1930
                      Total budgetary resources available
                      6,097
                      6,087
                      6,286

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      298
                      361
                      421

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      3,622
                      3,858
                      3,787

                      3010
                      New obligations, unexpired accounts
                      5,799
                      5,726
                      5,865

                      3011
                      Obligations ("upward adjustments"), expired accounts
                      7

                      3020
                      Outlays (gross)
                      –5,523
                      –5,734
                      –6,155

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –34
                      –63
                      –60

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –13

                      3050
                      Unpaid obligations, end of year
                      3,858
                      3,787
                      3,437

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      3,622
                      3,858
                      3,787

                      3200
                      Obligated balance, end of year
                      3,858
                      3,787
                      3,437

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      5,762
                      5,726
                      5,865

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      2,245
                      2,407
                      2,465

                      4011
                      Outlays from discretionary balances
                      3,278
                      3,327
                      3,690

                      4020
                      Outlays, gross (total)
                      5,523
                      5,734
                      6,155

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4033
                      Non-Federal sources
                      –2

                      Additional offsets against gross budget authority only:

                      4052
                      Offsetting collections credited to expired accounts
                      2

                      4060
                      Additional offsets against budget authority only (total)
                      2

                      4070
                      Budget authority, net (discretionary)
                      5,762
                      5,726
                      5,865

                      4080
                      Outlays, net (discretionary)
                      5,521
                      5,734
                      6,155

                      4180
                      Budget authority, net (total)
                      5,762
                      5,726
                      5,865

                      4190
                      Outlays, net (total)
                      5,521
                      5,734
                      6,155

             The Science appropriation provides for NASA's science mission, which is comprised of the agency's Earth and space science
                programs: Earth Science, Planetary Science, Heliophysics, and Astrophysics. These programs, which are managed by the Science
                Mission Directorate, seek to answer fundamental questions concerning the global Earth system; other planets in the solar system
                and around other stars; the connections among the Sun, Earth, and heliosphere; and the origin and evolution of planetary systems,
                the galaxy, and the universe, including the origin and distribution of life in the universe. Program objectives are pursued
                through robotic flight missions, ground-based scientific research and data analysis, and the development of new technologies
                for future missions. Additionally, the Budget funds within Science a new lunar robotic exploration program that will support
                innovative approaches to achieving human and science exploration goals.

             The Science appropriation provides for all of the research, development, operations, salaries and related expenses, and other
                general and administrative activities required to execute the programs within this account. Costs include labor, travel, procurement,
                and test and fabrication costs. Performance goals associated with these activities are addressed in NASA's detailed budget
                request.

          Object Classification (in millions of dollars)

                      Identification code 080–0120–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      Personnel compensation:

                      11.1
                      Full-time permanent
                      238
                      260
                      249

                      11.3
                      Other than full-time permanent
                      3
                      3
                      3

                      11.5
                      Other personnel compensation
                      1
                      1
                      1

                      11.9
                      Total personnel compensation
                      242
                      264
                      253

                      12.1
                      Civilian personnel benefits
                      76
                      76
                      79

                      21.0
                      Travel and transportation of persons
                      23
                      24
                      24

                      22.0
                      Transportation of things
                      4
                      5
                      5

                      23.2
                      Rental payments to others
                      9
                      8
                      8

                      23.3
                      Communications, utilities, and miscellaneous charges
                      4
                      4
                      4

                      24.0
                      Printing and reproduction
                      1
                      1
                      1

                      25.1
                      Advisory and assistance services
                      90
                      77
                      80

                      25.2
                      Other services from non-Federal sources
                      217
                      91
                      93

                      25.3
                      Other goods and services from Federal sources
                      218
                      239
                      246

                      25.4
                      Operation and maintenance of facilities
                      21
                      9
                      9

                      25.5
                      Research and development contracts
                      4,047
                      4,055
                      4,166

                      25.7
                      Operation and maintenance of equipment
                      104
                      102
                      105

                      26.0
                      Supplies and materials
                      31
                      26
                      27

                      31.0
                      Equipment
                      31
                      32
                      33

                      32.0
                      Land and structures
                      1
                      1
                      1

                      41.0
                      Grants, subsidies, and contributions
                      680
                      712
                      731

                      99.9
                      Total new obligations, unexpired accounts
                      5,799
                      5,726
                      5,865

          Employment Summary

                      Identification code 080–0120–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      1,888
                      1,875
                      1,876

             AeronauticsFor necessary expenses, not otherwise provided for, in the conduct and support of aeronautics research and development activities,
                including research, development, operations, support, and services; maintenance and repair, facility planning and design;
                space flight, spacecraft control, and communications activities; program management; personnel and related costs, including
                uniforms or allowances therefor, as authorized by sections 5901 and 5902 of title 5, United States Code; travel expenses;
                purchase and hire of passenger motor vehicles; and purchase, lease, charter, maintenance, and operation of mission and administrative
                aircraft, $608,900,000, to remain available until September 30, 2020.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0126–0–1–402
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Aeronautics
                      660
                      656
                      609

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      11
                      12
                      12

                      1021
                      Recoveries of prior year unpaid obligations
                      5

                      1050
                      Unobligated balance (total)
                      16
                      12
                      12

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      660
                      656
                      609

                      1120
                      Appropriations transferred to other acct CECR [080–0130]
                      –4

                      1160
                      Appropriation, discretionary (total)
                      656
                      656
                      609

                      1930
                      Total budgetary resources available
                      672
                      668
                      621

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      12
                      12
                      12

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      344
                      369
                      389

                      3010
                      New obligations, unexpired accounts
                      660
                      656
                      609

                      3011
                      Obligations ("upward adjustments"), expired accounts
                      1

                      3020
                      Outlays (gross)
                      –629
                      –636
                      –609

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –5

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –2

                      3050
                      Unpaid obligations, end of year
                      369
                      389
                      389

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      344
                      369
                      389

                      3200
                      Obligated balance, end of year
                      369
                      389
                      389

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      656
                      656
                      609

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      340
                      321
                      298

                      4011
                      Outlays from discretionary balances
                      289
                      315
                      311

                      4020
                      Outlays, gross (total)
                      629
                      636
                      609

                      4180
                      Budget authority, net (total)
                      656
                      656
                      609

                      4190
                      Outlays, net (total)
                      629
                      636
                      609

             This appropriation provides for the full costs associated with NASA's Aeronautics Research mission, which aims to expand the
                boundaries of aeronautical knowledge for the benefit of the nation and the broad aeronautics community. The mission is managed
                by NASA's Aeronautics Research Mission Directorate, and consists of the following integrated research programs: Airspace Operations
                and Safety, Advanced Air Vehicles, Integrated Aviation Systems, and Transformative Aeronautics Concepts. Full costs of these
                programs cover all of the research; development; operations; salaries and related expenses; and other general and administrative
                activities required to execute the programs. Costs include labor, travel, procurement, test, and fabrication costs. Performance
                goals associated with these activities are addressed in NASA's detailed budget request.

          Object Classification (in millions of dollars)

                      Identification code 080–0126–0–1–402
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      Personnel compensation:

                      11.1
                      Full-time permanent
                      159
                      117
                      109

                      11.3
                      Other than full-time permanent
                      3
                      2
                      2

                      11.9
                      Total personnel compensation
                      162
                      119
                      111

                      12.1
                      Civilian personnel benefits
                      50
                      37
                      34

                      21.0
                      Travel and transportation of persons
                      6
                      5
                      5

                      23.3
                      Communications, utilities, and miscellaneous charges
                      7
                      7
                      6

                      25.1
                      Advisory and assistance services
                      11
                      21
                      20

                      25.2
                      Other services from non-Federal sources
                      48
                      41
                      39

                      25.3
                      Other goods and services from Federal sources
                      5
                      5
                      5

                      25.4
                      Operation and maintenance of facilities
                      26
                      23
                      21

                      25.5
                      Research and development contracts
                      230
                      274
                      254

                      25.7
                      Operation and maintenance of equipment
                      37
                      34
                      31

                      26.0
                      Supplies and materials
                      23
                      22
                      20

                      31.0
                      Equipment
                      30
                      31
                      29

                      32.0
                      Land and structures
                      1
                      2
                      2

                      41.0
                      Grants, subsidies, and contributions
                      24
                      35
                      32

                      99.9
                      Total new obligations, unexpired accounts
                      660
                      656
                      609

          Employment Summary

                      Identification code 080–0126–0–1–402
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      1,375
                      1,356
                      1,330

              Exploration Research and Technology
             For necessary expenses, not otherwise provided for, in the conduct and support of space technology research and development
                activities, including research, development, operations, support, and services; maintenance and repair, facility planning
                and design; space flight, spacecraft control, and communications activities; program management; personnel and related costs,
                including uniforms or allowances therefor, as authorized by sections 5901 and 5902 of title 5, United States Code; travel
                expenses; purchase and hire of passenger motor vehicles; and purchase, lease, charter, maintenance, and operation of mission
                and administrative aircraft, $912,700,000, to remain available until September 30, 2020.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0131–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Space Technology
                      719
                      682
                      913

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      71
                      42
                      42

                      1021
                      Recoveries of prior year unpaid obligations
                      3

                      1050
                      Unobligated balance (total)
                      74
                      42
                      42

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      687
                      682
                      913

                      1930
                      Total budgetary resources available
                      761
                      724
                      955

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      42
                      42
                      42

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      485
                      500
                      518

                      3010
                      New obligations, unexpired accounts
                      719
                      682
                      913

                      3011
                      Obligations ("upward adjustments"), expired accounts
                      1

                      3020
                      Outlays (gross)
                      –699
                      –664
                      –764

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –3

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –3

                      3050
                      Unpaid obligations, end of year
                      500
                      518
                      667

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      485
                      500
                      518

                      3200
                      Obligated balance, end of year
                      500
                      518
                      667

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      687
                      682
                      913

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      281
                      239
                      320

                      4011
                      Outlays from discretionary balances
                      418
                      425
                      444

                      4020
                      Outlays, gross (total)
                      699
                      664
                      764

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4033
                      Non-Federal sources
                      –1

                      Additional offsets against gross budget authority only:

                      4052
                      Offsetting collections credited to expired accounts
                      1

                      4070
                      Budget authority, net (discretionary)
                      687
                      682
                      913

                      4080
                      Outlays, net (discretionary)
                      698
                      664
                      764

                      4180
                      Budget authority, net (total)
                      687
                      682
                      913

                      4190
                      Outlays, net (total)
                      698
                      664
                      764

             The FY 2019 President's Budget includes a new account structure for human space exploration and technology programs to improve
                alignment of funding with NASA's new strategic space exploration objectives. It renames the Space Operations, Exploration,
                and Space Technology accounts as LEO and Spaceflight Operations, Deep Space Exploration Systems, and Exploration Research
                and Technology, and realigns some program funding. As part of this realignment, NASA also plans to restructure the Human Exploration
                and Operations Mission Directorate and Space Technology Mission Directorate.

             This appropriation provides for the costs associated with the research and technology development needed for space exploration.
                The full costs provide for all of the research, development, operations, salaries and related expenses, and other general
                and administrative activities required to execute the programs within this account. Costs include labor, travel, procurement,
                and those associated with fabrication, tests and flight demonstrations.

             The programs within Exploration Research and Technology enable new missions by drawing on talent from the NASA workforce,
                academia, small businesses and the broader space enterprise to deliver innovative solutions that dramatically improve technological
                capabilities for NASA and the Nation, in addition to developing technologies and countermeasures to keep astronauts healthy
                and functional during deep space. The Exploration Research and Technology appropriation funds several programs: Small Business
                Innovative Research (SBIR), Small Business Technology Transfer (STTR), Early Stage Innovation & Partnerships, Technology Maturation,
                Technology Demonstrations, and Human Research Program (HRP). The Human Research Program and some technology efforts were previously
                included in the Exploration account, which is now Deep Space Exploration Systems. Performance goals associated with these
                activities are addressed in NASA's detailed budget request.

          Object Classification (in millions of dollars)

                      Identification code 080–0131–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      Personnel compensation:

                      11.1
                      Full-time permanent
                      86
                      82
                      94

                      11.3
                      Other than full-time permanent
                      1
                      1
                      1

                      11.9
                      Total personnel compensation
                      87
                      83
                      95

                      12.1
                      Civilian personnel benefits
                      27
                      27
                      31

                      21.0
                      Travel and transportation of persons
                      5
                      4
                      10

                      22.0
                      Transportation of things
                      3
                      2
                      2

                      25.1
                      Advisory and assistance services
                      27
                      25
                      31

                      25.2
                      Other services from non-Federal sources
                      37
                      41
                      44

                      25.3
                      Other goods and services from Federal sources
                      7
                      6
                      10

                      25.4
                      Operation and maintenance of facilities
                      3
                      4
                      5

                      25.5
                      Research and development contracts
                      436
                      411
                      560

                      25.7
                      Operation and maintenance of equipment
                      20
                      18
                      30

                      26.0
                      Supplies and materials
                      8
                      6
                      9

                      31.0
                      Equipment
                      16
                      15
                      16

                      41.0
                      Grants, subsidies, and contributions
                      43
                      40
                      70

                      99.9
                      Total new obligations, unexpired accounts
                      719
                      682
                      913

          Employment Summary

                      Identification code 080–0131–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      733
                      680
                      922

             Deep Space exploration SystemsFor necessary expenses, not otherwise provided for, in the conduct and support of exploration research and development activities,
                including research, development, operations, support, and services; maintenance and repair, facility planning and design;
                space flight, spacecraft control, and communications activities; program management; personnel and related costs, including
                uniforms or allowances therefor, as authorized by sections 5901 and 5902 of title 5, United States Code; travel expenses;
                purchase and hire of passenger motor vehicles; and purchase, lease, charter, maintenance, and operation of mission and administrative
                aircraft, $4,558,800,000, to remain available until September 30, 2020.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0124–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Exploration
                      4,317
                      4,295
                      4,559

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      43
                      81
                      187

                      1021
                      Recoveries of prior year unpaid obligations
                      31
                      106
                      106

                      1050
                      Unobligated balance (total)
                      74
                      187
                      293

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      4,324
                      4,295
                      4,559

                      1930
                      Total budgetary resources available
                      4,398
                      4,482
                      4,852

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      81
                      187
                      293

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      1,270
                      1,402
                      1,329

                      3010
                      New obligations, unexpired accounts
                      4,317
                      4,295
                      4,559

                      3011
                      Obligations ("upward adjustments"), expired accounts
                      2

                      3020
                      Outlays (gross)
                      –4,152
                      –4,262
                      –4,528

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –31
                      –106
                      –106

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –4

                      3050
                      Unpaid obligations, end of year
                      1,402
                      1,329
                      1,254

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      1,270
                      1,402
                      1,329

                      3200
                      Obligated balance, end of year
                      1,402
                      1,329
                      1,254

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      4,324
                      4,295
                      4,559

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      2,886
                      2,878
                      3,055

                      4011
                      Outlays from discretionary balances
                      1,266
                      1,384
                      1,473

                      4020
                      Outlays, gross (total)
                      4,152
                      4,262
                      4,528

                      4180
                      Budget authority, net (total)
                      4,324
                      4,295
                      4,559

                      4190
                      Outlays, net (total)
                      4,152
                      4,262
                      4,528

             The FY 2019 President's Budget includes a new account structure for human space exploration and technology program to improve
                alignment of funding with NASA's new strategic space exploration objectives. It renames the Space Operations, Exploration,
                and Space Technology accounts as LEO and Spaceflight Operations, Deep Space Exploration Systems, and Exploration Research
                and Technology, and realigns some program funding. As part of this realignment, NASA also plans to restructure the Human Exploration
                and Operations Mission Directorate and Space Technology Mission Directorate.

             This appropriation provides for costs associated with the development of systems and capabilities required for human exploration
                of space. The capabilities include launch and crew vehicles for missions beyond low Earth orbit; providing integrated systems
                to keep astronauts safe, healthy, and functional during deep space missions; and advancing the tools to increase exploration
                capabilities and reduce the launch mass and cost of deep space missions. The full costs provide for the research, development,
                operations, salaries and related expenses, and other general and administrative activities required to execute the programs
                within this account. Costs include labor, travel, procurement, test, and fabrication costs. Performance goals associated with
                these activities are addressed in NASA's detailed budget request.

             NASA's human space exploration programs include the Space Launch System, Orion, Exploration Ground Systems under the Exploration
                Systems Development theme, as well as cislunar and lunar surface programs. The Human Research Program and some technology
                programs that were previously included in the Exploration account are now reflected in the Exploration Research and Technology
                account.

          Object Classification (in millions of dollars)

                      Identification code 080–0124–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      Personnel compensation:

                      11.1
                      Full-time permanent
                      320
                      337
                      327

                      11.3
                      Other than full-time permanent
                      2
                      2
                      2

                      11.5
                      Other personnel compensation
                      2
                      1
                      2

                      11.8
                      Special personal services payments

                      1

                      11.9
                      Total personnel compensation
                      324
                      341
                      331

                      12.1
                      Civilian personnel benefits
                      105
                      109
                      107

                      21.0
                      Travel and transportation of persons
                      13
                      13
                      15

                      22.0
                      Transportation of things
                      1
                      1
                      1

                      23.3
                      Communications, utilities, and miscellaneous charges
                      17
                      14
                      15

                      25.1
                      Advisory and assistance services
                      466
                      442
                      473

                      25.2
                      Other services from non-Federal sources
                      52
                      45
                      49

                      25.3
                      Other goods and services from Federal sources
                      42
                      40
                      43

                      25.4
                      Operation and maintenance of facilities
                      108
                      103
                      110

                      25.5
                      Research and development contracts
                      2,850
                      2,858
                      3,063

                      25.7
                      Operation and maintenance of equipment
                      142
                      148
                      159

                      26.0
                      Supplies and materials
                      32
                      26
                      28

                      31.0
                      Equipment
                      46
                      44
                      47

                      32.0
                      Land and structures
                      62
                      52
                      55

                      41.0
                      Grants, subsidies, and contributions
                      57
                      59
                      63

                      99.9
                      Total new obligations, unexpired accounts
                      4,317
                      4,295
                      4,559

          Employment Summary

                      Identification code 080–0124–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      2,701
                      2,651
                      2,549

             EducationUnobligated balances previously appropriated under this heading shall be available for purposes of the closure of the Office
                   of Education, including but not limited to, ongoing administration, oversight, monitoring, and funding of grants previously
                   awarded by the Office of Education.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0128–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Education
                      105
                      99

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      11
                      8
                      12

                      1021
                      Recoveries of prior year unpaid obligations
                      2
                      4
                      4

                      1050
                      Unobligated balance (total)
                      13
                      12
                      16

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      100
                      99

                      1930
                      Total budgetary resources available
                      113
                      111
                      16

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      8
                      12
                      16

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      180
                      157
                      51

                      3010
                      New obligations, unexpired accounts
                      105
                      99

                      3020
                      Outlays (gross)
                      –124
                      –201
                      –47

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –2
                      –4
                      –4

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –2

                      3050
                      Unpaid obligations, end of year
                      157
                      51

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      180
                      157
                      51

                      3200
                      Obligated balance, end of year
                      157
                      51

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      100
                      99

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      12
                      99

                      4011
                      Outlays from discretionary balances
                      112
                      102
                      47

                      4020
                      Outlays, gross (total)
                      124
                      201
                      47

                      4180
                      Budget authority, net (total)
                      100
                      99

                      4190
                      Outlays, net (total)
                      124
                      201
                      47

              The Budget proposes the termination of the Office of Education and its portfolio of programs and projects. Unobligated balances
                previously appropriated under this heading may be used to support close-out costs.  Moving forward, a small team at NASA headquarters
                funded out of Agency Management and Operations will be accountable for strategic direction and coordination of the agency's
                STEM engagement efforts.

          Object Classification (in millions of dollars)

                      Identification code 080–0128–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      Personnel compensation:

                      11.1
                      Full-time permanent
                      5
                      3

                      11.8
                      Special personal services payments
                      1
                      1

                      11.9
                      Total personnel compensation
                      6
                      4

                      12.1
                      Civilian personnel benefits
                      1
                      2

                      25.1
                      Advisory and assistance services
                      2
                      4

                      25.2
                      Other services from non-Federal sources
                      4
                      6

                      25.5
                      Research and development contracts
                      4
                      6

                      25.7
                      Operation and maintenance of equipment
                      1
                      2

                      41.0
                      Grants, subsidies, and contributions
                      87
                      75

                      99.9
                      Total new obligations, unexpired accounts
                      105
                      99

          Employment Summary

                      Identification code 080–0128–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      51
                      30

             Safety, security and mission servicesFor necessary expenses, not otherwise provided for, in the conduct and support of science, aeronautics, space technology,
                exploration, space operations and education research and development activities, including research, development, operations,
                support, and services; maintenance and repair, facility planning and design; space flight, spacecraft control, and communications
                activities; program management; personnel and related costs, including uniforms or allowances therefor, as authorized by sections
                5901 and 5902 of title 5, United States Code; travel expenses; purchase and hire of passenger motor vehicles; not to exceed
                $63,000 for official reception and representation expenses; and purchase, lease, charter, maintenance, and operation of mission
                and administrative aircraft, $2,749,700,000, to remain available until September 30, 2020.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0122–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Cross Agency Support (Direct)
                      2,777
                      2,750
                      2,750

                      0801
                      Cross Agency Support (Reimbursable)
                      2,357
                      2,816
                      2,051

                      0900
                      Total new obligations, unexpired accounts
                      5,134
                      5,566
                      4,801

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      303
                      451
                      499

                      1021
                      Recoveries of prior year unpaid obligations
                      32
                      48
                      48

                      1050
                      Unobligated balance (total)
                      335
                      499
                      547

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      2,769
                      2,750
                      2,750

                      Spending authority from offsetting collections, discretionary:

                      1700
                      Collected
                      2,238
                      2,816
                      2,051

                      1701
                      Change in uncollected payments, Federal sources
                      243

                      1750
                      Spending auth from offsetting collections, disc (total)
                      2,481
                      2,816
                      2,051

                      1900
                      Budget authority (total)
                      5,250
                      5,566
                      4,801

                      1930
                      Total budgetary resources available
                      5,585
                      6,065
                      5,348

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      451
                      499
                      547

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      2,226
                      2,185
                      2,847

                      3010
                      New obligations, unexpired accounts
                      5,134
                      5,566
                      4,801

                      3011
                      Obligations ("upward adjustments"), expired accounts
                      9

                      3020
                      Outlays (gross)
                      –5,145
                      –4,856
                      –5,905

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –32
                      –48
                      –48

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –7

                      3050
                      Unpaid obligations, end of year
                      2,185
                      2,847
                      1,695

                      Uncollected payments:

                      3060
                      Uncollected pymts, Fed sources, brought forward, Oct 1
                      –1,443
                      –1,613
                      –1,613

                      3070
                      Change in uncollected pymts, Fed sources, unexpired
                      –243

                      3071
                      Change in uncollected pymts, Fed sources, expired
                      73

                      3090
                      Uncollected pymts, Fed sources, end of year
                      –1,613
                      –1,613
                      –1,613

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      783
                      572
                      1,234

                      3200
                      Obligated balance, end of year
                      572
                      1,234
                      82

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      5,250
                      5,566
                      4,801

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      2,990
                      3,157
                      2,897

                      4011
                      Outlays from discretionary balances
                      2,155
                      1,699
                      3,008

                      4020
                      Outlays, gross (total)
                      5,145
                      4,856
                      5,905

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4030
                      Federal sources
                      –2,091
                      –2,548
                      –1,846

                      4033
                      Non-Federal sources
                      –220
                      –268
                      –205

                      4040
                      Offsets against gross budget authority  and outlays (total)
                      –2,311
                      –2,816
                      –2,051

                      Additional offsets against gross budget authority only:

                      4050
                      Change in uncollected pymts, Fed sources, unexpired
                      –243

                      4052
                      Offsetting collections credited to expired accounts
                      73

                      4060
                      Additional offsets against budget authority only (total)
                      –170

                      4070
                      Budget authority, net (discretionary)
                      2,769
                      2,750
                      2,750

                      4080
                      Outlays, net (discretionary)
                      2,834
                      2,040
                      3,854

                      4180
                      Budget authority, net (total)
                      2,769
                      2,750
                      2,750

                      4190
                      Outlays, net (total)
                      2,834
                      2,040
                      3,854

             Safety, Security, and Mission Services (SSMS) manages agency-wide mission support functions and some of NASA's unique research
                facilities.

             This appropriation provides for the operations and maintenance, salaries and related expenses, and other general and administrative
                activities that support all NASA's missions.

             Under SSMS, Center Management and Operations includes the basic costs to manage and operate each of the nine NASA field centers
                and to maintain the technical capabilities required to support the Agency's Mission. The SSMS budget is not directly allocated
                or aligned to specific program or project requirements, but is centralized for efficient and effective administration and
                operation of the NASA Centers.

             Under SSMS, Agency Management and Operations provides for the management and oversight of corporate programs, the performance
                of agency-wide activities and functions, and the maintenance of unique research capabilities and facilities. Responsibilities
                include budget formulation and execution; establishment of management policies, procedures, and performance criteria; evaluation
                of progress; and coordination and integration of the Agency's activities.

          Object Classification (in millions of dollars)

                      Identification code 080–0122–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      Personnel compensation:

                      11.1
                      Full-time permanent
                      883
                      994
                      869

                      11.3
                      Other than full-time permanent
                      17
                      20
                      17

                      11.5
                      Other personnel compensation
                      30
                      29
                      29

                      11.8
                      Special personal services payments

                      1

                      11.9
                      Total personnel compensation
                      930
                      1,044
                      915

                      12.1
                      Civilian personnel benefits
                      281
                      314
                      278

                      13.0
                      Benefits for former personnel
                      1
                      1
                      1

                      21.0
                      Travel and transportation of persons
                      22
                      19
                      22

                      22.0
                      Transportation of things
                      2
                      2
                      2

                      23.1
                      Rental payments to GSA
                      7
                      6
                      7

                      23.2
                      Rental payments to others
                      22
                      20
                      22

                      23.3
                      Communications, utilities, and miscellaneous charges
                      59
                      53
                      59

                      24.0
                      Printing and reproduction
                      3
                      3
                      3

                      25.1
                      Advisory and assistance services
                      249
                      222
                      247

                      25.2
                      Other services from non-Federal sources
                      264
                      234
                      261

                      25.3
                      Other goods and services from Federal sources
                      49
                      43
                      48

                      25.4
                      Operation and maintenance of facilities
                      220
                      195
                      217

                      25.5
                      Research and development contracts
                      176
                      157
                      175

                      25.6
                      Medical care
                      8
                      7
                      8

                      25.7
                      Operation and maintenance of equipment
                      403
                      357
                      405

                      26.0
                      Supplies and materials
                      16
                      15
                      16

                      31.0
                      Equipment
                      33
                      29
                      32

                      32.0
                      Land and structures
                      16
                      15
                      16

                      41.0
                      Grants, subsidies, and contributions
                      16
                      14
                      16

                      99.0
                      Direct obligations
                      2,777
                      2,750
                      2,750

                      99.0
                      Reimbursable obligations
                      2,357
                      2,816
                      2,051

                      99.9
                      Total new obligations, unexpired accounts
                      5,134
                      5,566
                      4,801

          Employment Summary

                      Identification code 080–0122–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      7,337
                      7,690
                      7,655

                      2001
                      Reimbursable civilian full-time equivalent employment
                      326
                      263
                      307

             construction and environmental compliance and restorationFor necessary expenses for construction of facilities including repair, rehabilitation, revitalization, and modification of
                facilities, construction of new facilities and additions to existing facilities, facility planning and design, and restoration,
                and acquisition or condemnation of real property, as authorized by law, and environmental compliance and restoration, $348,200,000, to remain available until September 30, 2024: Provided, That proceeds from leases deposited into this account shall be available for a period of 5 years to the extent and in amounts
                as provided in annual appropriations Acts: Provided further, That such proceeds referred to in the preceding proviso shall be available for obligation for fiscal year 2019 in an amount not to exceed $9,470,300: Provided further, That each annual budget request shall include an annual estimate of gross receipts and collections and proposed use of all
                funds collected pursuant to section 20145 of title 51, United States Code.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0130–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Construction and Environmental Compliance and Restoration (Direct)
                      439
                      408
                      398

                      0801
                      Construction and Environmental Compliance and Restoration (Reimbursable)
                      4
                      9
                      9

                      0900
                      Total new obligations, unexpired accounts
                      443
                      417
                      407

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      134
                      269
                      281

                      1021
                      Recoveries of prior year unpaid obligations
                      14
                      62
                      62

                      1050
                      Unobligated balance (total)
                      148
                      331
                      343

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      544
                      358
                      348

                      1121
                      Appropriations transferred from other acct Space Operations [080–0115]
                      8

                      1121
                      Appropriations transferred from other acct Aeronautics [080–0126]
                      4

                      1121
                      Appropriations transferred from other acct Science [080–0120]
                      3

                      1160
                      Appropriation, discretionary (total)
                      559
                      358
                      348

                      Spending authority from offsetting collections, discretionary:

                      1700
                      Collected
                      5
                      9
                      9

                      1900
                      Budget authority (total)
                      564
                      367
                      357

                      1930
                      Total budgetary resources available
                      712
                      698
                      700

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      269
                      281
                      293

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      719
                      658
                      652

                      3010
                      New obligations, unexpired accounts
                      443
                      417
                      407

                      3020
                      Outlays (gross)
                      –490
                      –361
                      –483

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –14
                      –62
                      –62

                      3050
                      Unpaid obligations, end of year
                      658
                      652
                      514

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      719
                      658
                      652

                      3200
                      Obligated balance, end of year
                      658
                      652
                      514

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      564
                      367
                      357

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      45
                      22
                      22

                      4011
                      Outlays from discretionary balances
                      445
                      339
                      461

                      4020
                      Outlays, gross (total)
                      490
                      361
                      483

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4033
                      Non-Federal sources
                      –5
                      –9
                      –9

                      4180
                      Budget authority, net (total)
                      559
                      358
                      348

                      4190
                      Outlays, net (total)
                      485
                      352
                      474

             This appropriation provides for NASA's construction and environmental compliance and restoration activities, and makes available
                to use the net proceeds from Enhanced Use Leases for maintenance, capital revitalization, and improvement of real property
                assets and related personal property at NASA Centers received under the authority of section 20145 of the National Aeronautics
                and Space Act (51 U.S.C. 20145). The funding provides for all of the research; development; operations; design, repair, rehabilitation,
                modification of facilities, and construction of new facilities; and other general and administrative activities required to
                execute the programs within this account.

          Object Classification (in millions of dollars)

                      Identification code 080–0130–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      23.3
                      Communications, utilities, and miscellaneous charges
                      1
                      1
                      1

                      25.1
                      Advisory and assistance services
                      33
                      31
                      30

                      25.2
                      Other services from non-Federal sources
                      17
                      16
                      16

                      25.3
                      Other goods and services from Federal sources
                      20
                      18
                      18

                      25.4
                      Operation and maintenance of facilities
                      93
                      86
                      84

                      25.5
                      Research and development contracts
                      8
                      8
                      8

                      25.7
                      Operation and maintenance of equipment
                      22
                      20
                      20

                      31.0
                      Equipment
                      2
                      1
                      1

                      32.0
                      Land and structures
                      243
                      227
                      220

                      99.0
                      Direct obligations
                      439
                      408
                      398

                      99.0
                      Reimbursable obligations
                      4
                      9
                      9

                      99.9
                      Total new obligations, unexpired accounts
                      443
                      417
                      407

              LEO and Spaceflight Operations
             For necessary expenses, not otherwise provided for, in the conduct and support of space operations research and development
                activities, including research, development, operations, support and services; space flight, spacecraft control and communications
                activities, including operations, production, and services; maintenance and repair, facility planning and design; program
                management; personnel and related costs, including uniforms or allowances therefor, as authorized by sections 5901 and 5902
                of title 5, United States Code; travel expenses; purchase and hire of passenger motor vehicles; and purchase, lease, charter,
                maintenance and operation of mission and administrative aircraft, $4,509,600,000, to remain available until September 30, 2020.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0115–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Space Operations
                      4,996
                      4,917
                      4,510

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      104
                      91
                      449

                      1021
                      Recoveries of prior year unpaid obligations
                      39
                      358
                      108

                      1033
                      Recoveries of prior year paid obligations
                      1

                      1050
                      Unobligated balance (total)
                      144
                      449
                      557

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      4,951
                      4,917
                      4,510

                      1120
                      Appropriations transferred to other accts CECR [080–0130]
                      –8

                      1160
                      Appropriation, discretionary (total)
                      4,943
                      4,917
                      4,510

                      1900
                      Budget authority (total)
                      4,943
                      4,917
                      4,510

                      1930
                      Total budgetary resources available
                      5,087
                      5,366
                      5,067

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      91
                      449
                      557

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      1,717
                      2,431
                      1,567

                      3010
                      New obligations, unexpired accounts
                      4,996
                      4,917
                      4,510

                      3011
                      Obligations ("upward adjustments"), expired accounts
                      7

                      3020
                      Outlays (gross)
                      –4,242
                      –5,423
                      –4,716

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –39
                      –358
                      –108

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –8

                      3050
                      Unpaid obligations, end of year
                      2,431
                      1,567
                      1,253

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      1,717
                      2,431
                      1,567

                      3200
                      Obligated balance, end of year
                      2,431
                      1,567
                      1,253

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      4,943
                      4,917
                      4,510

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      2,589
                      3,147
                      2,887

                      4011
                      Outlays from discretionary balances
                      1,652
                      2,276
                      1,829

                      4020
                      Outlays, gross (total)
                      4,241
                      5,423
                      4,716

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4033
                      Non-Federal sources
                      –5

                      4040
                      Offsets against gross budget authority  and outlays (total)
                      –5

                      Additional offsets against gross budget authority only:

                      4052
                      Offsetting collections credited to expired accounts
                      4

                      4053
                      Recoveries of prior year paid obligations, unexpired accounts
                      1

                      4060
                      Additional offsets against budget authority only (total)
                      5

                      4070
                      Budget authority, net (discretionary)
                      4,943
                      4,917
                      4,510

                      4080
                      Outlays, net (discretionary)
                      4,236
                      5,423
                      4,716

                      Mandatory:

                      Outlays, gross:

                      4101
                      Outlays from mandatory balances
                      1

                      4180
                      Budget authority, net (total)
                      4,943
                      4,917
                      4,510

                      4190
                      Outlays, net (total)
                      4,237
                      5,423
                      4,716

             The FY 2019 President's Budget includes a new account structure for human space exploration and technology programs to improve
                alignment of funding with NASA's new strategic space exploration objectives. It renames the Space Operations, Exploration,
                and Space Technology accounts as LEO and Spaceflight Operations, Deep Space Exploration Systems, and Exploration Research
                and Technology, and realigns some program funding. As part of this realignment, NASA also plans to restructure the Human Exploration
                and Operations Mission Directorate and Space Technology Mission Directorate.

             This appropriation provides for the full costs associated with Low Earth Orbit (LEO) and spaceflight operations activities
                of the agency. The full costs include all labor, travel, procurement, test, and fabrication costs to execute these programs,
                which provide for all of the research, development, operations, salaries and related expenses, and other general and administrative
                activities supporting the programs within this account. Major themes within the LEO and Spaceflight Operations account include
                the International Space Station, Space Transportation, Space and Flight Support, and Commercial LEO Development. Performance
                goals associated with these activities are addressed in NASA's detailed budget request.

             The International Space Station (ISS) is a complex of research laboratories in LEO where America and its international partners,
                including Russia, Canada, Europe, and Japan, conduct unique scientific and technological investigations in a microgravity
                environment. The objective of the International Space Station is to support human space exploration and conduct science experiments
                and technology development unique to the on-orbit attributes of the facility.

             Space Transportation's objective is to transport U.S. astronauts and cargo safely back and forth to the ISS and potentially,
                in the future, to other orbital platforms and destinations. This theme includes the Commercial Crew Program and Crew and Cargo
                Program. Maintaining the ISS requires a fleet of vehicles and launch locations to transport astronauts, science experiments,
                critical supplies, maintenance hardware, and propellant to the ISS, and to dispose of waste generated on the ISS. The Commercial
                Crew Program partners with two U.S. companies, SpaceX and Boeing, to develop and operate safe, reliable, and affordable crew
                transportation to LEO. The Crew and Cargo Program purchases cargo transportation to the ISS under commercial resupply services
                contracts with Orbital ATK, SpaceX, and Sierra Nevada and purchases crew transportation from the Russian Roscosmos State Corporation,
                Boeing, and SpaceX. Payments to develop and test commercial crew vehicles, and for initial Post Certification Missions (PCMs)
                for each provider are funded by the Commercial Crew Program, whereas subsequent payments for operational commercial crew missions
                are funded by the Crew and Cargo Program.

             Space and Flight Support is comprised of multiple programs that provide ongoing support for a wide range of services required
                for safe and successful space mission operations. These programs include Space Communications and Navigation, Human Space
                Flight Operations, Launch Services, and Rocket Propulsion Testing. Services are provided to a wide range of customers including
                NASA, other U.S. Federal agencies, foreign governments, and commercial customers.

             Commercial LEO Development will support efforts to expand commercial activities in LEO, with a focus on enabling, developing,
                and deploying commercial platforms that can be used by NASA and other customers.

          Object Classification (in millions of dollars)

                      Identification code 080–0115–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      Personnel compensation:

                      11.1
                      Full-time permanent
                      293
                      309
                      296

                      11.3
                      Other than full-time permanent
                      3
                      2
                      3

                      11.5
                      Other personnel compensation
                      2
                      2
                      2

                      11.9
                      Total personnel compensation
                      298
                      313
                      301

                      12.1
                      Civilian personnel benefits
                      95
                      98
                      96

                      21.0
                      Travel and transportation of persons
                      15
                      13
                      12

                      22.0
                      Transportation of things
                      1,594
                      1,493
                      1,362

                      23.2
                      Rental payments to others
                      2
                      3
                      3

                      23.3
                      Communications, utilities, and miscellaneous charges
                      4
                      4
                      4

                      24.0
                      Printing and reproduction
                      1
                      1

                      25.1
                      Advisory and assistance services
                      95
                      84
                      77

                      25.2
                      Other services from non-Federal sources
                      149
                      127
                      116

                      25.3
                      Other goods and services from Federal sources
                      29
                      25
                      23

                      25.4
                      Operation and maintenance of facilities
                      49
                      37
                      34

                      25.5
                      Research and development contracts
                      2,362
                      2,414
                      2,204

                      25.7
                      Operation and maintenance of equipment
                      225
                      233
                      212

                      26.0
                      Supplies and materials
                      18
                      19
                      17

                      31.0
                      Equipment
                      13
                      16
                      15

                      32.0
                      Land and structures
                      7
                      5
                      4

                      41.0
                      Grants, subsidies, and contributions
                      40
                      32
                      30

                      99.9
                      Total new obligations, unexpired accounts
                      4,996
                      4,917
                      4,510

          Employment Summary

                      Identification code 080–0115–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      2,407
                      2,404
                      2,252

             Office of inspector generalFor necessary expenses of the Office of Inspector General in carrying out the Inspector General Act of 1978, $39,300,000,
                to remain available until September 30, 2020.
          Note.—A full-year 2018 appropriation for this account was not enacted at the time the budget was prepared; therefore, the
             budget assumes this account is operating under the Continuing Appropriations Act, 2018 (Division D of P.L. 115–56, as amended).
             The amounts included for 2018 reflect the annualized level provided by the continuing resolution.

          Program and Financing (in millions of dollars)

                      Identification code 080–0109–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Office of Inspector General (Direct)
                      38
                      38
                      39

                      0801
                      Office of Inspector General (Reimbursable)
                      1
                      2
                      2

                      0900
                      Total new obligations, unexpired accounts
                      39
                      40
                      41

                      Budgetary resources:

                      Budget authority:

                      Appropriations, discretionary:

                      1100
                      Appropriation
                      38
                      38
                      39

                      Spending authority from offsetting collections, discretionary:

                      1700
                      Collected
                      1
                      2
                      2

                      1900
                      Budget authority (total)
                      39
                      40
                      41

                      1930
                      Total budgetary resources available
                      39
                      40
                      41

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      4
                      4
                      4

                      3010
                      New obligations, unexpired accounts
                      39
                      40
                      41

                      3011
                      Obligations ("upward adjustments"), expired accounts
                      1

                      3020
                      Outlays (gross)
                      –39
                      –40
                      –41

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –1

                      3050
                      Unpaid obligations, end of year
                      4
                      4
                      4

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      4
                      4
                      4

                      3200
                      Obligated balance, end of year
                      4
                      4
                      4

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      39
                      40
                      41

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      35
                      36
                      37

                      4011
                      Outlays from discretionary balances
                      4
                      4
                      4

                      4020
                      Outlays, gross (total)
                      39
                      40
                      41

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4030
                      Federal sources
                      –1
                      –2
                      –2

                      4180
                      Budget authority, net (total)
                      38
                      38
                      39

                      4190
                      Outlays, net (total)
                      38
                      38
                      39

             This appropriation provides for the full costs associated with the operations of the NASA Office of Inspector General. The
                mission of the Office of Inspector General is to conduct audits and investigations of agency activities to prevent and detect
                fraud, waste, abuse, and mismanagement. The Inspector General keeps the NASA Administrator and the Congress informed of problems
                and deficiencies in agency programs and operations.

          Object Classification (in millions of dollars)

                      Identification code 080–0109–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Direct obligations:

                      11.1
                      Personnel compensation: Full-time permanent
                      23
                      23
                      24

                      12.1
                      Civilian personnel benefits
                      9
                      9
                      9

                      21.0
                      Travel and transportation of persons
                      1
                      1
                      1

                      25.2
                      Other services from non-Federal sources
                      3
                      3
                      3

                      25.3
                      Other goods and services from Federal sources
                      1
                      1
                      1

                      25.7
                      Operation and maintenance of equipment
                      1
                      1
                      1

                      99.0
                      Direct obligations
                      38
                      38
                      39

                      99.0
                      Reimbursable obligations
                      1
                      2
                      2

                      99.9
                      Total new obligations, unexpired accounts
                      39
                      40
                      41

          Employment Summary

                      Identification code 080–0109–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      1001
                      Direct civilian full-time equivalent employment
                      186
                      186
                      186

                      2001
                      Reimbursable civilian full-time equivalent employment
                      6
                      6
                      6

             Science, Aeronautics, and Exploration

             Program and Financing (in millions of dollars)

                      Identification code 080–0114–0–1–999
                      2017 actual
                      2018 est.
                      2019 est.

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      1
                      1
                      1

                      Budget authority:

                      Appropriations, discretionary:

                      1131
                      Unobligated balance of appropriations permanently reduced

                      –1

                      1930
                      Total budgetary resources available
                      1
                      1

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      1
                      1

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      1
                      1

                      3020
                      Outlays (gross)

                      –1

                      3050
                      Unpaid obligations, end of year
                      1

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      1
                      1

                      3200
                      Obligated balance, end of year
                      1

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross

                      –1

                      Outlays, gross:

                      4011
                      Outlays from discretionary balances

                      1

                      4180
                      Budget authority, net (total)

                      –1

                      4190
                      Outlays, net (total)

                      1

             The Science, Aeronautics, and Exploration account shows spending from balances prior to the account restructuring. In FY 2019,
                obligated balances will be transferred and merged into Treasury account 80–0130. Unobligated balances will be returned to
                Treasury and thereafter, this account will be closed.

             Human Space Flight

             Program and Financing (in millions of dollars)

                      Identification code 080–0111–0–1–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      6
                      1
                      1

                      3020
                      Outlays (gross)
                      –1

                      3041
                      Recoveries of prior year unpaid obligations, expired
                      –4

                      3050
                      Unpaid obligations, end of year
                      1
                      1
                      1

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      6
                      1
                      1

                      3200
                      Obligated balance, end of year
                      1
                      1
                      1

                      Budget authority and outlays, net:

                      Discretionary:

                      Outlays, gross:

                      4011
                      Outlays from discretionary balances
                      1

                      4180
                      Budget authority, net (total)

                      4190
                      Outlays, net (total)
                      1

              The Human Space Flight account shows spending from balances prior to the account restructuring. In FY 2019, obligated balances
                will be transferred and merged into Treasury accounts 80–0122, 80–0115 and 80–0130. Unobligated balances will be returned
                to Treasury and thereafter, this account will be closed.

             Science, Aeronautics and Technology

             Program and Financing (in millions of dollars)

                      Identification code 080–0110–0–1–999
                      2017 actual
                      2018 est.
                      2019 est.

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      1
                      1
                      1

                      Budget authority:

                      Appropriations, discretionary:

                      1131
                      Unobligated balance of appropriations permanently reduced

                      –1

                      1930
                      Total budgetary resources available
                      1
                      1

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      1
                      1

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      1
                      1
                      1

                      3050
                      Unpaid obligations, end of year
                      1
                      1
                      1

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      1
                      1
                      1

                      3200
                      Obligated balance, end of year
                      1
                      1
                      1

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross

                      –1

                      4180
                      Budget authority, net (total)

                      –1

                      4190
                      Outlays, net (total)

             The Science, Aeronautics, and Technology account shows spending from balances prior to the account restructuring. In FY 2019,
                obligated balances will be transferred and merged into Treasury account 80–0130. Unobligated balances will be returned to
                Treasury and thereafter, this account will be closed.

             Mission Support

             Program and Financing (in millions of dollars)

                      Identification code 080–0112–0–1–999
                      2017 actual
                      2018 est.
                      2019 est.

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      1
                      1
                      2

                      1033
                      Recoveries of prior year paid obligations

                      1

                      1050
                      Unobligated balance (total)
                      1
                      2
                      2

                      Budget authority:

                      Appropriations, discretionary:

                      1131
                      Unobligated balance of appropriations permanently reduced

                      –2

                      1930
                      Total budgetary resources available
                      1
                      2

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      1
                      2

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross

                      –2

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4033
                      Non-Federal sources

                      –1

                      Additional offsets against gross budget authority only:

                      4053
                      Recoveries of prior year paid obligations, unexpired accounts

                      1

                      4070
                      Budget authority, net (discretionary)

                      –2

                      4080
                      Outlays, net (discretionary)

                      –1

                      4180
                      Budget authority, net (total)

                      –2

                      4190
                      Outlays, net (total)

                      –1

             The Mission Support account shows spending from residual balances associated with construction of facilities activities prior
                to 2004.

             In FY 2019, obligated balances will be transferred and merged into Treasury accounts 80–0122 and 80–0130. Unobligated balances
                will be returned to Treasury and thereafter, this account will be closed.

             Working Capital Fund

             Program and Financing (in millions of dollars)

                      Identification code 080–4546–0–4–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0801
                      Working Capital Fund (Reimbursable)
                      436
                      504
                      521

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      13
                      15
                      17

                      1021
                      Recoveries of prior year unpaid obligations
                      1
                      3

                      1050
                      Unobligated balance (total)
                      14
                      18
                      17

                      Budget authority:

                      Spending authority from offsetting collections, discretionary:

                      1700
                      Collected
                      437
                      503
                      523

                      1930
                      Total budgetary resources available
                      451
                      521
                      540

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      15
                      17
                      19

                      Change in obligated balance:

                      Unpaid obligations:

                      3000
                      Unpaid obligations, brought forward, Oct 1
                      168
                      182
                      191

                      3010
                      New obligations, unexpired accounts
                      436
                      504
                      521

                      3020
                      Outlays (gross)
                      –421
                      –492
                      –517

                      3040
                      Recoveries of prior year unpaid obligations, unexpired
                      –1
                      –3

                      3050
                      Unpaid obligations, end of year
                      182
                      191
                      195

                      Memorandum (non-add) entries:

                      3100
                      Obligated balance, start of year
                      168
                      182
                      191

                      3200
                      Obligated balance, end of year
                      182
                      191
                      195

                      Budget authority and outlays, net:

                      Discretionary:

                      4000
                      Budget authority, gross
                      437
                      503
                      523

                      Outlays, gross:

                      4010
                      Outlays from new discretionary authority
                      240
                      302
                      314

                      4011
                      Outlays from discretionary balances
                      181
                      190
                      203

                      4020
                      Outlays, gross (total)
                      421
                      492
                      517

                      Offsets against gross budget authority and outlays:

                      Offsetting collections (collected) from:

                      4030
                      Federal sources
                      –422
                      –478
                      –493

                      4033
                      Non-Federal sources
                      –15
                      –25
                      –30

                      4040
                      Offsets against gross budget authority  and outlays (total)
                      –437
                      –503
                      –523

                      4080
                      Outlays, net (discretionary)
                      –16
                      –11
                      –6

                      4180
                      Budget authority, net (total)

                      4190
                      Outlays, net (total)
                      –16
                      –11
                      –6

             The Working Capital Fund provides goods and services on a reimbursable basis. The Fund finances four program activities. The
                first is the Solutions for Enterprise-wide Procurement program, which finances, on an agency-wide basis, scientific and engineering
                workstation procurement. The second program is the Information Technology Infrastructure Integration Program which consolidates
                and centralizes management of NASA information technology services in the areas of Tier 1 service desk and ordering, web services
                and technologies, enterprise business and management applications, integrated network/communications services, end user services,
                and data center services. The third program, NASA's Shared Services Center, performs selected financial management, human
                resources, information technology, and procurement services for NASA Headquarters and Centers. The last program, the National
                Center for Critical Information Processing and Storage, provides federal customers collocation services at a Tier III level
                with complete redundancy in the electrical distribution system from the national grid to the rack level.

          Object Classification (in millions of dollars)

                      Identification code 080–4546–0–4–252
                      2017 actual
                      2018 est.
                      2019 est.

                      Reimbursable obligations:

                      11.1
                      Personnel compensation: Full-time permanent
                      15
                      16
                      16

                      12.1
                      Civilian personnel benefits
                      5
                      6
                      6

                      21.0
                      Travel and transportation of persons
                      1
                      1
                      1

                      23.2
                      Rental payments to others
                      1
                      1
                      1

                      23.3
                      Communications, utilities, and miscellaneous charges
                      4
                      4
                      4

                      25.2
                      Other services from non-Federal sources
                      46
                      55
                      60

                      25.3
                      Other goods and services from Federal sources
                      1
                      3
                      5

                      25.4
                      Operation and maintenance of facilities
                      19
                      25
                      25

                      25.7
                      Operation and maintenance of equipment
                      343
                      391
                      401

                      26.0
                      Supplies and materials
                      1
                      2
                      2

                      99.9
                      Total new obligations, unexpired accounts
                      436
                      504
                      521

          Employment Summary

                      Identification code 080–4546–0–4–252
                      2017 actual
                      2018 est.
                      2019 est.

                      2001
                      Reimbursable civilian full-time equivalent employment
                      158
                      158
                      158

          Trust Funds
             Science, Space, and Technology Education Trust Fund

             Special and Trust Fund Receipts (in millions of dollars)

                      Identification code 080–8978–0–7–503
                      2017 actual
                      2018 est.
                      2019 est.

                      0100
                      Balance, start of year
                      15
                      16
                      16

                      0198
                      Rounding adjustment
                      1

                      0199
                      Balance, start of year
                      16
                      16
                      16

                      Receipts:

                      Current law:

                      1140
                      Earnings on Investments, Science, Space and Technology Education Trust Fund
                      2
                      1
                      1

                      2000
                      Total: Balances and receipts
                      18
                      17
                      17

                      Appropriations:

                      Current law:

                      2101
                      Science, Space, and Technology Education Trust Fund
                      –1
                      –1
                      –1

                      5098
                      Rounding adjustment
                      –1

                      5099
                      Balance, end of year
                      16
                      16
                      16

          Program and Financing (in millions of dollars)

                      Identification code 080–8978–0–7–503
                      2017 actual
                      2018 est.
                      2019 est.

                      Obligations by program activity:

                      0001
                      Science, Space, and Technology Education Trust Fund
                      1
                      1
                      1

                      0900
                      Total new obligations (object class 41.0)
                      1
                      1
                      1

                      Budgetary resources:

                      Unobligated balance:

                      1000
                      Unobligated balance brought forward, Oct 1
                      1
                      1
                      1

                      Budget authority:

                      Appropriations, mandatory:

                      1201
                      Appropriation (special or trust fund)
                      1
                      1
                      1

                      1930
                      Total budgetary resources available
                      2
                      2
                      2

                      Memorandum (non-add) entries:

                      1941
                      Unexpired unobligated balance, end of year
                      1
                      1
                      1

                      Change in obligated balance:

                      Unpaid obligations:

                      3010
                      New obligations, unexpired accounts
                      1
                      1
                      1

                      3020
                      Outlays (gross)
                      –1
                      –1
                      –1

                      Budget authority and outlays, net:

                      Mandatory:

                      4090
                      Budget authority, gross
                      1
                      1
                      1

                      Outlays, gross:

                      4100
                      Outlays from new mandatory authority

                      1
                      1

                      4101
                      Outlays from mandatory balances
                      1

                      4110
                      Outlays, gross (total)
                      1
                      1
                      1

                      4180
                      Budget authority, net (total)
                      1
                      1
                      1

                      4190
                      Outlays, net (total)
                      1
                      1
                      1

                      Memorandum (non-add) entries:

                      5000
                      Total investments, SOY: Federal securities: Par value
                      16
                      17
                      17

                      5001
                      Total investments, EOY: Federal securities: Par value
                      17
                      17
                      17

             Administrative Provisions

             Administrative provisions
             (Including transfers of funds)Funds for any announced prize otherwise authorized shall remain available, without fiscal year limitation, until the prize
                is claimed or the offer is withdrawn.
          Not to exceed 5 percent of any appropriation made available for the current fiscal year for the National Aeronautics and Space Administration in this Act, or provided for the National Aeronautics and Space Administration
                   under previous appropriations Acts that remain available for obligation or expenditure in fiscal year 2019, may be transferred between such appropriations, but no such appropriation, except as otherwise specifically provided, shall
                be increased by more than 10 percent by any such transfers. Any such funds transferred to "Construction and Environmental
                Compliance and Restoration" for construction activities shall not increase that appropriation by more than 20 percent. Balances
                so transferred shall be merged with and available for the same purposes and the same time period as the appropriations to
                which transferred. Any transfer pursuant to this provision shall be treated as a reprogramming of funds under section 504
                 of this Act and shall not be available for obligation except in compliance with the procedures set forth in that section.
          The spending plan required by this Act shall be provided by NASA at the theme and program level. The spending plan, as well
                as any subsequent change of an amount established in that spending plan that meets the notification requirements of section
                504 of this Act, shall be treated as a reprogramming under section 504 of this Act and shall not be available for obligation
                or expenditure except in compliance with the procedures set forth in that section.

             General and Administrative Provisions

             GENERAL FUND RECEIPT ACCOUNTS

             (in millions of dollars)

                      2017 actual
                      2018 est.
                      2019 est.

                      Offsetting receipts from the public:

                      080–322000
                      All Other General Fund Proprietary Receipts Including Budget Clearing Accounts
                      2
                      4
                      4

                      General Fund Offsetting receipts from the public
                      2
                      4
                      4

                      Intragovernmental payments:

                      080–388500
                      Undistributed Intragovernmental Payments and Receivables from Cancelled Accounts
                      3
                      2
                      2

                      General Fund Intragovernmental payments
                      3
                      2
                      2