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


[[Page 1049]]

 
              NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

                              Federal Funds

General and special funds:

                           Human Space Flight

    For necessary expenses, not otherwise provided for, in the conduct 
and support of human space flight research and development activities, 
including research, development, operations, and services; maintenance; 
construction of facilities including [repair, rehabilitation,] 
revitalization and modification of [real and personal property,] 
facilities, construction of new facilities and additions to existing 
facilities, facility planning and design, and acquisition or 
condemnation of real property, as authorized by law; space flight, 
spacecraft control and communications activities including operations, 
production, and services; and purchase, lease, charter, maintenance and 
operation of mission and administrative aircraft, [$5,510,900,000] 
$5,499,900,000, to remain available until September 30, [2001: Provided, 
That $40,000,000 of the amount provided in this paragraph shall be 
available to the space shuttle program only for preparations necessary 
to carry out a life and micro-gravity science mission, to be flown 
between STS-107 and December 2001] 2002. For necessary expenses of the 
International Space Station, to become available on October 1 of the 
fiscal year specified and remain available for that and the following 
fiscal year, as follows: for fiscal year 2002, $1,858,500,000; for 
fiscal year 2003, $1,452,500,000; for fiscal year 2004, $1,327,000,000; 
and for fiscal year 2005, $1,275,000,000. (Departments of Veterans 
Affairs and Housing and Urban Development, and Independent Agencies 
Appropriations Act, 2000.)

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0111-0-1-252      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Obligations by program activity:
      Direct program:

00.01   Space station...................       2,252       2,464       2,125
00.02   Payload and ELV support.........                                  86
00.03   Investments and support.........                                 123
00.04   Space shuttle...................       2,956       2,858       3,156
00.05   Payload and utilization 
          operations....................         199         261           8
09.01 Reimbursable program..............         183         204         195
                                           ---------   ---------  ----------
10.00   Total new obligations...........       5,590       5,787       5,693
----------------------------------------------------------------------------

    Budgetary resources available for obligation:
21.40 Unobligated balance available, 
        start of year...................         271         368         274
22.00 New budget authority (gross)......       5,663       5,692       5,695
22.10 Resources available from 
        recoveries of prior year 
        obligations.....................          24
                                           ---------   ---------  ----------
23.90   Total budgetary resources 
          available for obligation......       5,958       6,060       5,969
23.95 Total new obligations.............      -5,590      -5,787      -5,693
24.40 Unobligated balance available, end 
        of year.........................         368         274         276
----------------------------------------------------------------------------

    New budget authority (gross), detail:
      Discretionary:

40.00   Appropriation...................       5,480       5,511       5,500
40.76   Reduction pursuant to P.L. 106-
          113...........................                     -23
                                           ---------   ---------  ----------
43.00     Appropriation (total 
            discretionary)..............       5,480       5,488       5,500
      Spending authority from offsetting 
          collections:

68.00   Offsetting collections (cash)...         174         204         195
68.10   From Federal sources: Change in 
          receivables and unpaid, 
          unfilled orders...............           9
                                           ---------   ---------  ----------
68.90     Spending authority from 
            offsetting collections 
            (total discretionary).......         183         204         195
                                           ---------   ---------  ----------
70.00   Total new budget authority 
          (gross).......................       5,663       5,692       5,695
----------------------------------------------------------------------------

    Change in unpaid obligations:
      Unpaid obligations, start of year:

72.40   Obligated balance, start of year       1,662       1,627       1,740
72.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............          23          32          32
                                           ---------   ---------  ----------
72.99     Total unpaid obligations, 
            start of year...............       1,685       1,659       1,772
73.10 Total new obligations.............       5,590       5,787       5,693
73.20 Total outlays (gross).............      -5,591      -5,674      -5,655
73.40 Adjustments in expired accounts 
        (net)...........................           1
73.45 Adjustments in unexpired accounts.         -24
      Unpaid obligations, end of year:

74.40   Obligated balance, end of year..       1,627       1,740       1,778
74.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............          32          32          32
                                           ---------   ---------  ----------
74.99     Total unpaid obligations, end 
            of year.....................       1,659       1,772       1,810
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.90 Outlays from new discretionary 
        authority.......................       3,753       3,864       3,864
86.93 Outlays from discretionary 
        balances........................       1,838       1,810       1,791
                                           ---------   ---------  ----------
87.00   Total outlays (gross)...........       5,591       5,674       5,655
----------------------------------------------------------------------------

    Offsets:
      Against gross budget authority and outlays:

        Offsetting collections (cash) 
            from:
88.40     Non-Federal sources...........         -29         -44         -40
88.45     Offsetting governmental 
            collections from the public.        -145        -160        -155
                                           ---------   ---------  ----------
88.90       Total, offsetting 
              collections (cash)........        -174        -204        -195
      Against gross budget authority only:

88.95   From Federal sources: Change in 
          receivables and unpaid, 
          unfilled orders...............          -9
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................       5,480       5,488       5,500
90.00 Outlays...........................       5,417       5,470       5,460
---------------------------------------------------------------------------

                 Summary of Budget Authority and Outlays

                        (in millions of dollars)

                                     1999 actual  2000 est.   2001 est.
Enacted/requested:
  Budget Authority..................       5,480       5,488       5,500
  Outlays...........................       5,417       5,470       5,460
Supplemental proposal:
  Budget Authority..................                     -20
  Outlays...........................                     -13          -6
                                    ------------------------------------
Total:
  Budget Authority..................       5,480       5,468       5,500
  Outlays...........................       5,417       5,457       5,454
                                    ====================================

    This appropriation provides funding for human space flight 
activities, including development and operations of the Space Station, 
the Space Station research program, and operation of the Space Shuttle. 
This includes development of contingency capabilities for the Space 
Station, high priority investments to improve the safety of the Space 
Shuttle, and required construction projects in direct support of Space 
Station and Space Shuttle programs.

Performance Objectives

    Space station.--The International Space Station (ISS) is an 
international laboratory in low Earth orbit on which American, Russian, 
Canadian, European, and Japanese astronauts will conduct unique 
scientific and technological investigations in a microgravity 
environment. The goal of the Station is to support activities requiring 
the unique attributes of humans in space and establish a permanent human 
presence in Earth orbit. The proposed budget provides multi-year funding 
through an advance appropriation for the continued development of the 
vehicle and its research components and for current operations, assembly 
and utilization of the station. With the first launches successfully 
completed, the budget includes funding to keep subsequent assembly 
missions on schedule for completion in 2004-2005 and continue work to

[[Page 1050]]

wards a long-term solution to the safe return of the full complement of 
station crewmembers in the event of an emergency.

    In FY 1999, successful launches of the first two components of the 
Station--the FGB control module and the first node--were completed in 
November and December respectively, and the elements were assembled in 
orbit and activated. A third flight delivering supplies to support the 
first crews was successfully performed in May 1999. Flight hardware 
elements for the next six U.S. assembly launches--the Z1 and S0 trusses, 
the control moment gyros, the first photo-voltaic array and battery 
sets, initial thermal radiators, communication equipment, the U.S. 
Laboratory, the mobile servicing system and the Multi-Purpose Logistics 
Carrier--were delivered to the launch site, and the first phases of 
multi-element integrated testing (MEIT) were completed. Crew training, 
payload processing, hardware element processing, and mission operations 
were supported. In 2000, fabrication of flight hardware, qualification 
testing, assembly, integration and mission operations will all continue. 
Difficulties with completion of U.S. MEIT testing, coupled with delays 
to the Russian Service Module, caused by recent failures of the Proton 
launch system, have delayed planned assembly and expedition flights. The 
Service Module will be launched in mid- to late-2000, and assembly and 
expedition flights will follow. The Russian launch of a Soyuz vehicle 
will enable permanent occupation of the station with rotating crews of 
three. In 2001 plans are to launch seven U.S. missions to station, 
including the lab module. Phase 2 of the station assembly will be 
completed with the launch of the airlock, and preparations will continue 
for the start of Phase 3 and the first shuttle mission dedicated to 
research utilization in late 2001/early 2002.

    As part of the FY 1999 operating plan, Russian Program Assurance 
(RPA) was re-established within the Space Station budget line. The RPA 
funding provides contingency activities to address ISS program 
requirements resulting from delays or shortfalls on the part of Russia 
in meeting its commitments to the ISS program. The first step in the 
contingency plan is to protect against a potential further delay in the 
Russian Service Module (SM) and its capabilities. The ISS program is 
purchasing, from the U.S. Naval Research Laboratory (NRL), an interim 
control module (ICM) to provide backup attitude control and reboost 
functions for the ISS. Additionally, the Shuttle fleet is being 
configured for reaction control system (RCS) interconnectivity 
modifications to enable greater Shuttle reboost capability to the ISS. A 
permanent U.S. propulsion capability is being developed for 
implementation in the 2002 timeframe. This includes a propulsion module, 
carriers, and activities to support propulsion logistics. An agreement 
negotiated with the Russians in 1999 will provide needed hardware and 
services to the U.S., including services to provide additional crew 
return capability when the station attains the ability to support a 
permanent crew of six.

    Phase I development of a crew return vehicle (CRV), to provide the 
U.S. capability to return up to seven crew members, is initiated in 
2000. Design and operational technologies tested and demonstrated in 
Phase I will reduce CRV development risk. The X-38, including the space 
test flight in 2002, is being transitioned to merge with the ISS CRV 
funding in 2000 because of the overlap of CRV and X-38 technology 
developments. Pending a final decision on CRV development, which will be 
part of broader future launch decisions, Phase 2 development funding 
will be included in the Aero-Space Technology budget estimates beginning 
in FY 2002.

    Payload and Expendable Launch Vehicle (ELV) support.--Activities 
funded by the payload processing budget support the required technical 
expertise and facilities to perform the payload buildup, test and 
checkout, integration, servicing, transportation and installation in the 
launch vehicle. In FY 1999, launch and landing payload support 
activities were provided for four Space Shuttle missions, including the 
first American segment of the ISS, and payload processing support 
activities and facilities for six manifested major payloads. In FY 2000, 
launch and landing payload support activities will be provided for six 
Space Shuttle missions including the Hubble Space Telescope (HST-03A) 
launch, the Shuttle Radar Topography Mission (SRTM) launch, and three 
assembly flights for the ISS. In FY 2001, launch and landing payload 
support activities will be provided for nine Space Shuttle missions, 
including seven ISS assembly and utilization flights. During this 
period, five pallets will be used in Space Shuttle missions, including 
the fourth HST servicing mission and three of the ISS assembly flights. 
In FY 2000 and 2001, over 20 major and secondary payloads will be 
supported, including major hardware for ISS assembly.

    The ELV Mission Support budget provides funds for acquiring 
requisite launch services to meet all NASA requirements and for 
technical insight of commercially provided launch services. Advanced 
mission design/analysis and leading edge integration services are 
provided for the full range of NASA missions under consideration for 
launch on ELVs. During FY 1999, 10 ELV launches and 1 secondary ELV 
mission were successfully launched. Support for 13 missions, including 
Tracking and Data Relay Satellite-H (TDRS-H), Terra and Geostationary 
Operational Environmental Satellite-L (GOES-L), and four planetary 
missions are planned for launch in FY 2000, and integration and 
technical management of 28 payloads are planned for launch in FY 2000 
and FY 2001. Support for 11 missions and 1 secondary payload is planned 
for FY 2001.

    Investments and support.--Beginning in FY 2001, the Human 
Exploration and Development of Space (HEDS) Commercialization and 
Technology Initiative will include human space exploration and 
development activities emphasizing highly innovative technologies, 
advances in science, and enabling synergistic commercial space 
development efforts.

    A new project activity will begin in FY 2001 to ensure NASA's rocket 
propulsion test capabilities are properly managed and maintained in 
world class condition. The project will significantly enhance our 
ability to properly manage NASA's rocket testing activities and 
infrastructure across all four participating NASA centers.

    Engineering and technical base (ETB) activity will continue to 
support the institutional capability in the operation of space flight 
laboratories, technical facilities, and testbeds; to conduct independent 
safety, and reliability assessments; and to stimulate science and 
technical competence in the United States.

    Space shuttle.--The Space Shuttle is a partially reusable space 
vehicle that provides several unique capabilities to the United States 
space program. These include retrieving payloads from orbit for reuse, 
servicing and repairing satellites in space, safely transporting humans 
to and from space, launching ISS components and providing an assembly 
platform in space, and operating and returning space laboratories. In FY 
1999, the Space Shuttle launched four flights successfully including the 
first ISS assembly mission, one resupply flight to the ISS, one 
microgravity research mission which included the return to space of 
Senator John Glenn, and the successful deployment of the Chandra--
Advanced X-Ray Astrophysics Facility (AXAF).

    The six flights manifested in FY 2000 include the emergency HST 
Servicing Mission 3A which will replace failing gyros on the HST and the 
Shuttle Radar Topography Mission (SRTM), a joint DOD/NASA payload to 
study the earth. The Space Shuttle will also visit the ISS four more 
times, for both assembly and maintenance. Finally, the first crew will

[[Page 1051]]

begin the permanent occupation and presence aboard the ISS in FY 2000.

    Nine flights are planned during FY 2001, including seven ISS 
assembly and servicing missions. In addition, a dedicated microgravity 
research flight and another HST Servicing Mission (3B) will be flown.

    The 2002 budget estimate for this account is $5.5 billion, including 
advance appropriations.

               Object Classification (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0111-0-1-252      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

      Direct obligations:

22.0    Transportation of things........           4           4           4
23.3    Communications, utilities, and 
          miscellaneous charges.........          55          57          56
24.0    Printing and reproduction.......           2           2           2
25.1    Advisory and assistance services           5           5           5
25.2    Other services..................         132         136         134
25.3    Purchases of goods and services 
          from Government accounts......         125         129         127
25.4    Operation and maintenance of 
          facilities....................       1,389       1,429       1,412
25.5    Research and development 
          contracts.....................       3,220       3,333       3,274
25.7    Operation and maintenance of 
          equipment.....................          43          44          44
26.0    Supplies and materials..........         148         152         151
31.0    Equipment.......................          95          98          97
32.0    Land and structures.............         146         150         148
41.0    Grants, subsidies, and 
          contributions.................          43          44          44
                                           ---------   ---------  ----------
99.0      Subtotal, direct obligations..       5,407       5,583       5,498
99.0  Reimbursable obligations..........         183         204         195
                                           ---------   ---------  ----------
99.9    Total new obligations...........       5,590       5,787       5,693
---------------------------------------------------------------------------

                                

                   Science, Aeronautics and Technology

    For necessary expenses, not otherwise provided for, in the conduct 
and support of science, aeronautics and technology research and 
development activities, including research, development, operations, and 
services; maintenance; construction of facilities including [repair, 
rehabilitation] revitalization, and modification of [real and personal 
property] facilities, construction of new facilities and additions to 
existing facilities, facility planning and design, and acquisition or 
condemnation of real property, as authorized by law; space flight, 
spacecraft control and communications activities including operations, 
production, and services; and purchase, lease, charter, maintenance and 
operation of mission and administrative aircraft, [$5,606,700,000] 
$5,929,400,000, to remain available until September 30, [2001] 2002. 
(Departments of Veterans Affairs and Housing and Urban Development, and 
Independent Agencies Appropriations Act, 2000.)

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0110-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Obligations by program activity:
      Direct program:

00.01   Space science...................       2,211       2,224       2,389
00.02   Life and microgravity science...         246         294         301
00.03   Earth science...................       1,478       1,427       1,408
00.04   Aero-space technology...........       1,342       1,093       1,190
00.05   Space operations................                                 503
00.06   Academic programs...............         146         152         102
00.07   Mission communication services..         375         394          20
09.01 Reimbursable program..............         574         606         548
                                           ---------   ---------  ----------
10.00   Total new obligations...........       6,372       6,190       6,461
----------------------------------------------------------------------------

    Budgetary resources available for obligation:
21.40 Unobligated balance available, 
        start of year...................         401         281         278
22.00 New budget authority (gross)......       6,228       6,187       6,477
22.10 Resources available from 
        recoveries of prior year 
        obligations.....................          25
                                           ---------   ---------  ----------
23.90   Total budgetary resources 
          available for obligation......       6,654       6,468       6,755
23.95 Total new obligations.............      -6,372      -6,190      -6,461
23.98 Unobligated balance expiring or 
        withdrawn.......................          -1
24.40 Unobligated balance available, end 
        of year.........................         281         278         294
----------------------------------------------------------------------------

    New budget authority (gross), detail:
      Discretionary:

40.00   Appropriation...................       5,654       5,607       5,929
40.76   Reduction pursuant to P.L. 106-
          113...........................                     -26
                                           ---------   ---------  ----------
43.00     Appropriation (total 
            discretionary)..............       5,654       5,581       5,929
      Spending authority from offsetting 
          collections:

68.00   Offsetting collections (cash)...         542         606         548
68.10   From Federal sources: Change in 
          receivables and unpaid, 
          unfilled orders...............          32
                                           ---------   ---------  ----------
68.90     Spending authority from 
            offsetting collections 
            (total discretionary).......         574         606         548
                                           ---------   ---------  ----------
70.00   Total new budget authority 
          (gross).......................       6,228       6,187       6,477
----------------------------------------------------------------------------

    Change in unpaid obligations:
      Unpaid obligations, start of year:

72.40   Obligated balance, start of year       2,997       2,977       3,195
72.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............         318         350         350
                                           ---------   ---------  ----------
72.99     Total unpaid obligations, 
            start of year...............       3,315       3,327       3,545
73.10 Total new obligations.............       6,372       6,190       6,461
73.20 Total outlays (gross).............      -6,327      -5,972      -6,183
73.40 Adjustments in expired accounts 
        (net)...........................          -9
73.45 Adjustments in unexpired accounts.         -25
      Unpaid obligations, end of year:

74.40   Obligated balance, end of year..       2,977       3,195       3,473
74.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............         350         350         350
                                           ---------   ---------  ----------
74.99     Total unpaid obligations, end 
            of year.....................       3,327       3,545       3,823
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.90 Outlays from new discretionary 
        authority.......................       3,209       3,123       3,222
86.93 Outlays from discretionary 
        balances........................       3,118       2,849       2,962
                                           ---------   ---------  ----------
87.00   Total outlays (gross)...........       6,327       5,972       6,183
----------------------------------------------------------------------------

    Offsets:
      Against gross budget authority and outlays:

        Offsetting collections (cash) 
            from:
88.40     Non-Federal sources...........         -24         -42         -37
88.45     Offsetting governmental 
            collections from the public.        -518        -564        -511
                                           ---------   ---------  ----------
88.90       Total, offsetting 
              collections (cash)........        -542        -606        -548
      Against gross budget authority only:

88.95   From Federal sources: Change in 
          receivables and unpaid, 
          unfilled orders...............         -32
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................       5,654       5,581       5,929
90.00 Outlays...........................       5,785       5,366       5,635
---------------------------------------------------------------------------

    This appropriation provides for the research and development 
activities of the National Aeronautics and Space Administration. Funds 
are included for the construction, maintenance, and operation of 
programmatic facilities. Space science, earth science, life and 
microgravity science, and aero-space technology programs are included in 
the 21st Century Research Fund.

Performance Objectives

    Space science.--The Space Science program seeks to answer 
fundamental questions concerning: the galaxy and the universe; the 
connection between the Sun, Earth and heliosphere; the origin and 
evolution of planetary systems; and the origin and distribution of life 
in the universe. The Space Science program is comprised of a base 
program of research and development activities, including research and 
flight mission activities, and major space-based facilities.

    In 1999, the Space Science program produced many notable scientific 
accomplishments. The Hubble Space Telescope fulfilled one of its most 
important objectives in May 1999, when the Hubble Space Telescope Key 
Project Team announced the results of their studies, which yielded an 
estimate of the Hubble constant to within 10% accuracy. The Hubble 
constant indicates the rate at which the universe is expanding

[[Page 1052]]

from the primordial ``Big Bang'' and is one of the most important 
numbers in cosmology because it is needed to estimate the age and size 
of the universe. Combining the Hubble constant measurement with 
estimates of the density of the universe, the team estimated that the 
universe is approximately 12 billion years old. The Chandra X-ray 
Observatory (CXO), the third of the four ``great observatories,'' was 
successfully launched and activated. As soon as science operations 
began, images showing astonishing detail of X-ray sources were obtained. 
With its unprecedented capabilities in energy coverage, spatial 
resolution, spectral resolution and sensitivity, CXO has just begun to 
investigate some of the most important topics in space science, 
including the age and size of the universe, dark matter, and X-ray 
background radiation. Other scientific discoveries related to the 
structure and evolution of the universe include the detection of 
``middleweight'' black holes that are 100 to 10,000 times as massive as 
the Sun but occupy less space that the Moon, and the first-ever optical 
image of a gamma ray burst. Gamma ray bursts are the most powerful 
explosions in the universe, and for a very short period produce more 
energy than the rest of the universe combined. Also in 1999, several 
teams of researchers supported by NASA discovered many new planets 
orbiting nearby stars, including evidence of the first known planet 
orbiting a pair of stars. Within our own solar system, the Mars Global 
Surveyor (MGS) generated the first global three-dimensional view of 
Mars. These images revealed an impact basin deep enough to swallow Mount 
Everest, as well as pathways for water flow. Scientists using MGS' 
magnetometer discovered surprising evidence of past movement of the 
Martian crust, further evidence that ancient Mars was a more dynamic, 
Earth-like planet than it is today. A dramatic time-lapse movie by the 
Hubble Space Telescope showed, for the first time, seasonal changes on 
Uranus. The Galileo spacecraft produced new images showing volcanic 
activity on Jupiter's moon Io, similar to that which occurred on Earth 
eons ago. Analysis of data from the Lunar Prospector spacecraft 
confirmed that the Moon has a small core, supporting the theory that the 
bulk of the Moon was ripped away from the Earth when an object the size 
of Mars collided with the Earth. In the field of solar science, NASA 
sponsored scientists using the Japanese Yokoh spacecraft discovered that 
an S-shaped structure often appears on the Sun in advance of a coronal 
mass ejection (CME), a violent eruption that is as powerful as billions 
of nuclear explosions. The Solar and Heliospheric Observatory (SOHO) 
spacecraft discovered the source of high-speed solar wind, a stream of 
electrified gas that affects the Earth's space environment.

     To capitalize on these enormous successes during the past year, the 
NASA budget request for FY 2001 once again highlights Space Science. The 
President's request includes an enhanced Solar System Exploration 
program to establish a sustained presence at multiple locations on and 
around Mars and other potential research targets. Using outposts of 
numerous, networked spacecraft, NASA will greatly enhance the science 
return and overall success of future missions. Eventually, such outposts 
will bring continuous access to live data and video so that researchers 
and the public can explore and experience other worlds first-hand. Space 
Science continues to focus on the Origins program and fundamental 
questions regarding the creation of the universe and planetary systems 
and the possibility of life on places other than planet Earth. Planning 
and technology development continues for the deployment of powerful 
telescopes to detect Earth-like planets beyond our solar system, for the 
launch of a mission to directly observe subsurface oceans on Europa, and 
for future missions to seek evidence of past or present life on Mars. 
The Administration's request also includes a ``Living With a Star'' 
Initiative to develop better solar weather forecasting capabilities and 
to better protect high-tech infrastructure from dangerous solar 
phenomena. The Space Science program is responsible for agency-wide core 
technology development, and funding is provided in this program to 
enhance and enable future missions through the administration's 
information technology (IT) initiative and other high-leverage 
technologies. These technologies will increase the return of the Space 
Science program and other NASA programs many fold through revolutionary 
capabilities in the areas of networking, intelligent systems, 
nanotechnology, communications, lightweight structures, miniaturization, 
mobility, and propulsion for robotic spacecraft and rovers.

    Development activities continue on the Relativity (Gravity Probe-B) 
mission, which is now scheduled for launch in 2001. The Space Infrared 
Telescope Facility (SIRTF) initiated development in April 1998, with 
launch planned for December 2001. Development activities on the 
Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) 
mission continued in 1999, with launch planned in 2000. Development 
activities on the Stratospheric Observatory for Infrared Astronomy 
(SOFIA) continue. The upgraded Hubble Space Telescope (HST) is providing 
new insights into our universe. Funding for HST continues to support 
operations, as well as preparation for servicing mission 3B in 2001 and 
servicing mission 4 in 2003.

    In Explorer missions, development activities continue for the 
Microwave Anisotropy Probe (MAP) and Imager for Magnetosphere-to-Aurora 
Global Exploration (IMAGE). MAP will be launched in November 2000, IMAGE 
in February 2000. Two new MIDEX missions were selected in 1999: Full-sky 
Astrometric Mapping Explorer (FAME) scheduled for launch in 2004, and 
Swift, a multi-wavelength observatory for gamma-ray burst astronomy, to 
be launched in 2003. Three Small (SMEX) missions continued development 
in FY 1999: the High Energy Spectroscopic Imager (HESSI) is to launch in 
2000; the Galaxy Evolution Explorer (GALEX) will launch in 2001; and the 
Two Wide-Angle Neutral Atom Spectrometers (TWINS) has been selected as a 
mission of opportunity, to be launched in 2002 and 2004. These missions 
emphasize reduced mission costs and accelerated launch schedules.

    The Mars Global Surveyor entered Mars orbit in September 1997, the 
Mars Climate Orbiter was launched in December 1998 and the Mars Polar 
Lander was launched in January 1999. Unfortunately, the Orbiter was lost 
while attempting to enter Mars orbit in September 1999, and the Lander 
was lost during entry, descent and landing in December 1999. Funds are 
requested for the development of future Mars missions to establish a 
sustained presence at Mars that will increase the science return and 
overall success of the Mars program. A review to be accomplished in 2000 
will provide the plan for future launches.

    In the Discovery program, the fourth mission, Stardust, was launched 
on schedule in February 1999, and is operating normally during its 
cruise to comet Wild-2, with the encounter scheduled for 2004. Two 
Discovery missions selected in 1997 are proceeding on schedule: the 
Comet Nucleus Tour (CONTOUR) will begin development in CY 2000 and will 
be launched in 2002; the Genesis solar wind sample return mission has 
begun development and will be launched in 2001. Two new missions were 
selected for implementation during 1999: The MErcury Surface, Space 
ENvironment, GEochemistry and Ranging (MESSENGER) mission to orbit 
Mercury; and the Deep Impact mission to fly by and fire an impactor into 
a comet. Both MESSENGER and Deep Impact are planned for launch in 2004. 
The President's request supports a new class of Discovery micromissions 
that will also be undertaken in 2001 to complement solar system explo

[[Page 1053]]

ration efforts with more frequent and varied research opportunities.

    The Flight Validation program is providing flight demonstrations of 
critical new technologies which will reduce the mass and cost of future 
science and spacecraft subsystems, while maintaining or improving 
mission capabilities. The Deep Space-1 mission was launched in October 
1998, and has validated its technologies and completed its primary 
mission, and is now in an extended mission. The Deep Space-2 mission 
which was launched with the Mars Polar Lander in January 1999, and was 
lost, along with the Lander, during entry, descent and landing on Mars 
in December 1999. The Space Technology 4 mission was terminated during 
1999 due to the need to fund higher priority programs within the Space 
Science Enterprise. Also in 1999, NASA selected the Nanosat 
Constellation Trailblazer as the Space Technology-5 Flight Validation 
mission. This mission will feature three very small satellites (each 
about the size of a large birthday cake), that will fly in formation and 
test eight technologies in the harsh space environment near the boundary 
of Earth's protective magnetic field. The Flight Validation program has 
been restructured to enhance openness and competition as well as to 
increase the number of opportunities for technologies to be flight-
validated. Funding for the restructured program has been increased.

    Life and microgravity science.--This program uses the microgravity 
environment of space to conduct basic and applied research to understand 
the effect of gravity on living systems and to conduct research in the 
areas of fluid physics, combustion science, fundamental physics, 
materials science and biotechnology. In FY 1999, the program flew one 
science mission (STS-95) on a Spacehab carrier with ISS precursor 
science experiments. STS-95 included commercially sponsored research as 
well as research on the effects of aging conducted in collaboration with 
the National Institutes of Health's National Institute on Aging. FY 1999 
has also seen the beginning of ISS assembly. In FY 2000, the Russian 
Service Module will be launched, enabling permanent human presence 
aboard the ISS. In FY 2001, the U.S. laboratory module for the ISS will 
be launched, which will enable initial life and microgravity hardware 
and experiments to be established aboard the ISS. This will begin a new 
era of research. In FY 2001, the Administration introduces a 
Bioastronautics Initiative to accelerate research and develop 
countermeasures that will improve the health and safety of astronauts 
aboard the International Space Station. Devices and countermeasures 
developed through this initiative may also have many health benefits on 
Earth. As assembly of the ISS continues to advance, ISS Crew Health Care 
System (CHECS) components will be utilized to provide on-orbit medical, 
environmental, and countermeasure capabilities for all ISS crew members. 
In early FY 2001, prior to full research capabilities aboard the ISS, 
the program will fly a dedicated Space Shuttle research mission which 
will extend previous Space Shuttle research results and help the program 
as well as the community prepare for increasing research operations on 
the ISS.

    Earth science.--The purpose of NASA's Earth Science Enterprise (ESE) 
is to understand the total Earth system and the effects of natural and 
human-induced changes on the global environment. ESE is pioneering the 
new interdisciplinary field of research called Earth system science, 
which recognizes that the Earth's land surface, oceans, atmosphere, ice 
sheets and biota are both dynamic and highly interactive. Earth system 
science is an area of research with the potential for immense benefit to 
the nation, yielding new knowledge and tools for weather forecasting, 
agriculture, urban and land use planning, and other areas of economic 
and environmental importance. In concert with other agencies and the 
global research community, ESE is providing the scientific foundation 
needed for the complex policy choices that lie ahead on the road to 
sustainable development. ESE has established three broad goals to 
fulfill its purpose: (1) expand scientific knowledge of the Earth system 
using NASA's unique capabilities from the vantage points of space, 
aircraft and in situ platforms; (2) disseminate information about the 
Earth system; and, (3) enable productive use of Earth science and 
technology in the public and private sectors.

    FY 1999 was a year of substantial scientific accomplishment in our 
understanding of the major elements that comprise the Earth system. Over 
the oceans, ESE had several accomplishments. ESE reduced the uncertainty 
in global rainfall over the tropics by one half, helping improve 
predictions for short-term weather and availability of fresh water 
globally; produced near-daily ocean color maps that help us understand 
the role of oceans in removing carbon dioxide from the atmosphere; 
documented the waxing and waning of El Nino, enabling seasonal climate 
prediction; and resumed global measurement of winds at the ocean surface 
to improve short-term weather prediction and tracking of major 
hurricanes and tropical storms globally. Over the ice caps, researchers 
determined the thinning and thickening rates for the Greenland ice 
sheet; provided the first detailed radar mosaic for Antarctica; and 
provided the daily observations of the Polar Regions from space.

    Over the land, ESE produced the first satellite-derived assessments 
of global forest cover, began refreshing the global archive of 30-meter 
land cover data, and conducted an international field experiment in the 
Amazonia to help understand the role of vegetation on Earth in removing 
carbon dioxide from the atmosphere. In the solid Earth, ESE and the 
United States Geological Survey (USGS) measured surface displacement, 
which is a precursor to earthquakes. In the atmosphere, ESE continued to 
measure concentrations of both ozone and ozone-depleting substances and 
assess the recovery of upper ozone correlation and implemented a 17-year 
data record of aerosols and cloud properties toward predicting annual to 
decadal climate variations.

    The Earth Observing System (EOS), the centerpiece of Earth Science, 
is a program of multiple spacecraft, supporting technology and 
interdisciplinary science investigations to provide a long-term data set 
of key parameters needed to understand global climate change. The first 
EOS satellite launches began in 1999 with the launches of Landsat-7, 
Terra (formerly AM-1), and QuikSCAT. EOS PM-1 and Chemistry are on 
schedule to launch in 2000 and 2002 respectively. Preceding the EOS are 
a number of individual satellite and Shuttle-based missions which are 
helping to reveal basic processes.

    Complementing EOS, under the Earth Probes Program, will be a series 
of small, rapid development Earth System Science Pathfinder (ESSP) 
missions to study emerging science questions and to use innovative 
measurement techniques in support of EOS. The first two ESSP missions, 
Vegetation Canopy Lidar (VCL) and Gravity Recovery and Climate 
Experiment (GRACE), are scheduled for launch in 2000 and 2001, 
respectively. The second pair of ESSP missions, the Pathfinder 
Instruments for Cloud and Aerosol Spaceborne Observations--Climatologie 
Etendue des Nuages et des Aerosols (PICASSO-CENA) mission, and Cloudsat, 
will be launched together in 2003.

    Data from Earth Science missions, both current and future, will be 
captured, processed into useful information, and broadly distributed by 
the EOS Data Information System (EOSDIS). EOSDIS will ensure that data 
from these diverse missions remain available in active archives for use 
by current and future scientists. These data are expected to find uses 
well beyond the Earth Science research community. Therefore, ESE is 
engaging in a variety of public/private partnerships to extend the 
utility of Earth science data to environmental decision-makers, resource 
managers, commercial

[[Page 1054]]

firms, social scientists and the general academic community, educators, 
state and local governments and others.

     The ESE research and analysis program is essential to the discovery 
of new concepts and to the design of future missions. ESE research is 
coordinated through the U.S. Global Change Research Program (USGCRP), 
the Committee on the Environment and Natural Resources (CENR) and its 
Subcommittee on Global Change Research, and the various boards and 
committees at the National Academy of Sciences.

    Aero-space technology.--The mission of this Enterprise is to pioneer 
the identification, development, verification, transfer, application, 
and commercialization of high-payoff aerospace technologies. Through its 
research and technology accomplishments, Aero-space technology promotes 
economic growth and national security through a safe, efficient national 
aviation system and affordable, reliable space transportation. To meet 
this challenge, the Enterprise has established three pillar goals. 
Within these three pillar goals, a set of ten objectives, each with its 
own roadmap, has been defined to address current and future National 
needs. The technologies associated with these objectives are pre-
competitive, long-term, high-risk research endeavors with high-payoff in 
terms of market growth, safety, low acquisition cost, consumer 
affordability and a cleaner environment. The goals of this Enterprise 
directly support National policy in Aero-Space, documented in the 1999 
National R&D Plan for Aviation Safety, Security, Efficiency, and 
Environmental Compatibility and the 1994 National Space Transportation 
Policy.

    The first pillar, Global Civil Aviation, addresses the fundamental, 
systemic issues in the aviation system to ensure continued growth and 
development appropriate to the needs of the national and global 
economies. These systemic issues--safety, capacity, environmental 
compatibility, and affordability--cut across markets including large 
subsonic civil transports, air cargo, commuter and general aviation, and 
rotorcraft. The second pillar, Revolutionary Technology Leaps, will 
revolutionize air travel and the way in which aircraft are designed, 
built, and operated, and addresses the challenges in small aircraft, 
short-haul transportation; supersonic, transoceanic transportation; 
design tools, and experimental planes. The third pillar, Access to 
Space, will enable greater commercial potential of space and the 
expansion of space research and exploration by significantly reducing 
the cost of space transportation systems while improving reliability, 
operability, responsiveness, and safety.

    A major restructuring and replanning of the Aero-Space Enterprise's 
base R&T program was accomplished during 1999 to integrate the 
Enterprise's existing space transportation and aeronautics base R&T 
development programs into a single entity. There were several benefits 
that accrued from this effort. First, the restructuring better aligned 
the required technology development efforts with our core competencies 
and brought the expertise resident in the Aeronautics Research Centers 
to bear on the technological challenges associated with space 
transportation. Second, the integration of space and aeronautics 
development needs resulted in a synergistic technology development plan 
that better utilized our resources, eliminated overlaps, and allowed 
dual use, between the space transportation and aeronautics users, to be 
planned up front rather than relying on serendipitous events.

    The President's request for NASA increases investments in technology 
development activities that will address the challenges (safety, 
environmental impact, capacity, and space transportation costs) that 
face the aero-space community.

    The Administration's request supports the development of Smart Air 
Transport System (SATS) technologies that could enable a revolution in 
accessibility and mobility in America. The product of the SATS (Phase I) 
Program will demonstrate the technological potential for transportation-
driven economic development throughout the nation.

    The Administration's request also supports a Quiet Airplane 
Technology program that will build upon the highly successful noise 
reduction efforts that were begun in the Aero-Space Technology (AST) 
enterprise and maintain progress toward meeting the enterprise's noise 
reduction goal. The achievement of these goals will lead to an air 
transportation system that contains objectionable aircraft noise within 
airport boundaries.

    By the end of the decade, NASA will conduct a competitive launch 
services procurement to support the launch requirements of human 
spaceflight operations--the 2nd Generation RLV Focused Program. The 
objectives will be to dramatically improve safety while significantly 
reducing the cost of such launch services, and to eliminate the current 
need for the Government to own and operate the full system. The 
President's request includes new funding through the Space Launch 
Initiative to support this competition and fulfills a 1994 National 
Space Transportation Policy guideline calling for government and private 
sector decisions by 2000 on development of an operational, next-
generation reusable launch system.

    As part of NASA's response to the national goal of reducing aircraft 
accidents by a factor of 5 by 2001, NASA increased its safety base R&T 
efforts in order to provide a foundation for a focused safety program 
beginning in FY 2000. In 1999, the base R&T programs matured these 
required safety related technologies to the point where they were 
successfully transferred to the focused Aviation Safety Program (AvSP) 
which begins in FY 2000. These technologies will provide the foundation 
for focused safety development efforts in the future. They also will 
result in some near term achievements. For example, in FY 1999, the 
causes of controlled flight into terrain (responsible for 30% of fatal 
accidents) were identified and 13 contracts issued via a NASA research 
announcement (NRA) to develop and demonstrate approaches for fully 
operational and certifiable synthetic vision and health management 
systems. Also in FY 1999, the preparations for flight evaluation of a 
crew-centered synthetic vision display were completed and a study 
initiated to understand the applicability of synthetic vision to General 
Aviation (GA) type aircraft was begun. In FY 2000, the AvSP program will 
produce an icing training program for GA and commuter pilots, complete a 
flight evaluation of an initial national capability for digital data 
link and graphical display of weather information, and demonstrate a 
concept for the integration of air traffic control runway incursion 
information onto aircraft flight deck displays. In FY 2001, the AvSP 
will complete a laboratory demonstration of a fuel system modification 
to reduce flammability, define the architecture for an integrated 
onboard health management system, and down-select synthetic vision 
concepts suitable for retrofit in commercial, business, and general 
aviation aircraft. The base R&T will continue to develop the 
technologies that will contribute to the FY 2007 goal. For example, in 
FY 2001, NASA will downselect ground-based remote sensor technologies 
for a prototype ground-system to sense icing conditions and continue 
work on a related computer.

    NASA also continued its efforts to reduce the environmental impact 
associated with aviation systems. In FY 1999, in partnership with 
industry, a demonstration in an engine test rig of a low emission 
combustor that produced a 50% reduction in oxides of nitrogen 
(NOX) emissions was successfully demonstrated. The Ultra 
Efficient Engine Technology (UEET) program will carry this effort 
forward and demonstrate a system that achieves significant reductions in 
NOX and carbon dioxide (COX) emissions in FY 2001. 
The UEET is a new focused program that begins in FY 2000 and is planned 
and designed

[[Page 1055]]

to develop high-payoff, high-risk technologies to enable the next 
breakthroughs in propulsion systems to spawn a new generation of high 
performance, operationally efficient and economical, reliable and 
environmentally compatible U.S. aircraft.

    Similarly with noise, in FY 1999, NASA validated an Aircraft Noise 
Impact model and demonstrated that improved high-lift systems in 
combination with advanced operational procedures have the potential to 
reduce community impact by the equivalent of 2-4 db source noise 
reduction. In 2000, NASA will validate the technologies required to 
reduce community noise impact by up to 10 dB relative to 1992 
technology.

    In 1999, the Aviation System Capacity program conducted field 
evaluation of an initial demonstration of Aircraft Vortex Spacing System 
(AVOSS) technologies with transport of vortices and class-wise spacing 
features that have the potential to reduce approach spacing standards. 
In FY 2000, NASA will demonstrate all technologies in a realistic 
Terminal Area environment achieving a 12-15% increase in single runway 
throughput and proving the ability to space aircraft closer than 3,400 
feet on parallel runways while meeting all Federal Aviation 
Administration (FAA) safety criteria. In FY 2001, NASA will demonstrate 
transition airspace decision support tools for: (1) Air Traffic Control 
(ATC)/airline operations center and ATC/cockpit information exchange, 
and (2) conflict resolution.

    Building on its world record setting performances, the Environmental 
Research Aircraft and Sensor technology (ERAST) project in FY 1999 
demonstrated a multistage turbocharged RPA to 60,000 feet for an 8 hour 
duration. The Centurion solar-powered airplane, a vehicle with a 
wingspan greater than 200 ft., completed initial low altitude evaluation 
under battery power. The Centurion solar-powered RPA was modified to a 
wingspan configuration of greater than 245 ft., named Helios and will 
continue flight testing in FY 2000. This configuration will be more 
suitable for extreme endurance as well as short flights to the 100,000 
ft. altitude. In FY01, the Flight Research program will demonstrate a 
solar powered RPA at 100,000 ft and complete development of a 
heavyweight energy storage system under the ERAST project. Both 
achievements will demonstrate technologies that will provide atmospheric 
satellites for commercial use, disaster relief efforts such as 
communication relays and real time sensing, and increase the Nation's 
capability to make scientific sampling high in the atmosphere.

    Also in FY 2000, NASA initiated a new project entitled Revolutionary 
Concepts (REVCON) to accelerate the exploration of high-risk, 
breakthrough technologies in order to enable revolutionary departures 
from traditional approaches to air vehicle design. At the end of FY 
1999, three concepts were accepted for inclusion in the REVCON program. 
Flights of these vehicles will begin in FY 2001 or 2002. Also in FY 
2001, NASA will issue the first NRA under REVCON to select the next set 
of REVCON concepts.

    Low-cost space transportation remains the key enabler for a more 
aggressive civil space program. NASA's Integrated Space Transportation 
Planning activities have identified a strategy based upon competition, 
safety, industry leadership and a comprehensive systems approach to NASA 
requirements. Funding supports aggressive technical risk reduction and 
advanced development for multiple reusable launch vehicle concepts. 
Identification and preliminary development of NASA unique systems and 
near-term pursuit of alternative access for key space station needs are 
also both critical elements of the Integrated Space Transportation Plan 
(ISTP). All of these efforts combined will move NASA closer to a full 
and open Reusable Launch Vehicle (RLV) competition in the 2005 timeframe 
to meet NASA's human space flight needs by the end of the decade.

    Under ISTP, the 2nd Generation RLV Focused Program continues to 
develop, apply and demonstrate new technologies that significantly 
advance the ability of the launch vehicle industry to initiate 
commercially viable reusable launch systems.

    The X-33 and X-34 have completed several major hardware fabrication 
and test milestones. However, technical difficulties and program 
replanning have delayed the flight testing of these advanced technology 
demonstrators. The X-34 is now expected to fly in 2000. The X-33 flight 
schedule is under review, following the failure of the composite liquid 
hydrogen tanks during testing. The X-37 complements the X-33 and X-34 
vehicles by investigating the orbit-to-Earth and orbital operations 
regimes of the flight spectrum, and will begin flight tests in 2002.

    The Commercial Technology Program's focus in FY 1999 was continued 
investment of 10-20 percent of the NASA R&D budget in commercial 
partnerships with industry. Based on experience to date, these 
commercial partnerships are expected to increase the return on the 
government's R&D investment, allowing NASA to do more with limited 
funds, and strengthening the international competitiveness of key 
industry sectors. In FY 2000 and 2001, the program will continue to 
emphasize increasing commercial partnerships with industry and continue 
to refine and expand a technology and partnership database.

    Space operations.--The primary goal of space operations is to 
provide highly reliable, cost-effective space operations services in 
support of NASA's science and aeronautics programs. In addition, support 
is provided to interagency, international, and commercial space-faring 
enterprises on a reimbursable basis. The Space Communications Mission 
and Data Services program is composed of Operations, Mission and Data 
Service Upgrades, Tracking and Data Relay Satellite Replenishment, and 
Technology Projects, as well as spectrum management and data standards 
coordination. Services are provided to a large number of NASA Missions 
including planetary, and interplanetary missions; human space flight 
missions; near-earth and earth orbiting missions; and sub-orbital and 
aeronautical flight tests. A Consolidated Space Operations (CSOC) was 
successfully implemented by the Space Operations Management Office at 
Johnson Space Center and Lockheed Martin Space Operations Company. The 
CSOC provides end-to-end mission and data services to both NASA and non-
NASA customers. A total of nine contracts were consolidated at 
inception, and four more have been consolidated in FY 2000 to date, with 
two additional contracts to be consolidated in FY 2001. Management 
responsibility for all Wide Area Network data distribution services for 
all human space flight, earth orbiting and deep space missions and NASA 
administrative communications was outsourced by CSOC in FY 2000. 
Development of the TDRS Replenishment Spacecraft is ongoing, with the 
first satellite scheduled for launch in FY 2000.

    Academic programs.--The goal of this program is to promote 
excellence in America's education system through enhancing and expanding 
scientific and technological competence. NASA's education programs span 
the elementary through graduate levels and are directed at both students 
and faculty. The goal of the Minority University Research Program is to 
expand opportunities for talented students from underrepresented groups 
who are pursuing degrees in science and engineering and to strengthen 
the research capabilities of minority universities and colleges. The 
range of activities conducted under this program will continue to 
capture the interest of all students in science and technology, develop 
talented students at the undergraduate and graduate levels, provide 
research opportunities for students and faculty members at NASA centers, 
and strengthen and enhance the research capabilities of the Nation's 
colleges and universities.

[[Page 1056]]

    The 2002 budget estimates for this account is $5.9 billion.

               Object Classification (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0110-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

      Direct obligations:

22.0    Transportation of things........           5           5           5
23.3    Communications, utilities, and 
          miscellaneous charges.........          54          52          55
24.0    Printing and reproduction.......           5           5           5
25.1    Advisory and assistance services         109         105         111
25.2    Other services..................         772         743         787
25.3    Purchases of goods and services 
          from Government accounts......         223         215         227
25.4    Operation and maintenance of 
          facilities....................         264         254         269
25.5    Research and development 
          contracts.....................       3,132       3,016       3,194
25.7    Operation and maintenance of 
          equipment.....................          82          79          84
26.0    Supplies and materials..........         210         202         214
31.0    Equipment.......................         101          97         103
32.0    Land and structures.............          24          23          24
41.0    Grants, subsidies, and 
          contributions.................         817         788         834
                                           ---------   ---------  ----------
99.0      Subtotal, direct obligations..       5,798       5,584       5,912
99.0  Reimbursable obligations..........         574         606         549
                                           ---------   ---------  ----------
99.9    Total new obligations...........       6,372       6,190       6,461
---------------------------------------------------------------------------

                                

                             Mission Support

    For necessary expenses, not otherwise provided for, in carrying out 
mission support for human space flight programs and science, 
aeronautical, and technology programs, including research operations and 
support; [space communications activities including operations, 
production and services;] maintenance; construction of facilities 
including [repair, rehabilitation,] revitalization and modification of 
facilities, [minor] construction of new facilities and additions to 
existing facilities, facility planning and design, environmental 
compliance and restoration, and acquisition or condemnation of real 
property, as authorized by law; program management; personnel and 
related costs, including uniforms or allowances therefor, as authorized 
by 5 U.S.C. 5901-5902; travel expenses; purchase, lease, charter, 
maintenance, and operation of mission and administrative aircraft; not 
to exceed [$35,000] $40,000 for official reception and representation 
expenses; and purchase (not to exceed 33 for replacement only) and hire 
of passenger motor vehicles, [$2,515,100,000] $2,584,000,000 to remain 
available until September 30, [2001] 2002. (Departments of Veterans 
Affairs and Housing and Urban Development, and Independent Agencies 
Appropriations Act, 2000.)

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0112-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Obligations by program activity:
      Direct program:

00.01   Safety, mission assurance, 
          engineering, and advanced 
          concepts......................          39          43          47
00.02   Research and program management.       2,110       2,202       2,292
00.03   Construction of facilities......         173         193         233
00.04   Space communication services....         184          91           5
                                           ---------   ---------  ----------
01.00   Total direct program............       2,506       2,529       2,577
09.01 Reimbursable program..............          97         127         132
                                           ---------   ---------  ----------
10.00   Total new obligations...........       2,603       2,656       2,709
----------------------------------------------------------------------------

    Budgetary resources available for obligation:
21.40 Unobligated balance available, 
        start of year...................          85          86          69
22.00 New budget authority (gross)......       2,597       2,639       2,716
22.10 Resources available from 
        recoveries of prior year 
        obligations.....................           7
                                           ---------   ---------  ----------
23.90   Total budgetary resources 
          available for obligation......       2,689       2,725       2,785
23.95 Total new obligations.............      -2,603      -2,656      -2,709
24.40 Unobligated balance available, end 
        of year.........................          86          69          76
----------------------------------------------------------------------------

    New budget authority (gross), detail:
      Discretionary:

40.00   Appropriation...................       2,511       2,515       2,584
40.75   Reduction pursuant to P.L. 106-
          51............................         -11
40.76   Reduction pursuant to P.L. 106-
          113...........................                      -3
                                           ---------   ---------  ----------
43.00     Appropriation (total 
            discretionary)..............       2,500       2,512       2,584
      Spending authority from offsetting 
          collections:

68.00   Offsetting collections (cash)...         122         127         132
68.10   From Federal sources: Change in 
          receivables and unpaid, 
          unfilled orders...............         -25
                                           ---------   ---------  ----------
68.90     Spending authority from 
            offsetting collections 
            (total discretionary).......          97         127         132
                                           ---------   ---------  ----------
70.00   Total new budget authority 
          (gross).......................       2,597       2,639       2,716
----------------------------------------------------------------------------

    Change in unpaid obligations:
      Unpaid obligations, start of year:

72.40   Obligated balance, start of year         487         586         594
72.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............          66          41          41
                                           ---------   ---------  ----------
72.99     Total unpaid obligations, 
            start of year...............         553         627         635
73.10 Total new obligations.............       2,603       2,656       2,709
73.20 Total outlays (gross).............      -2,517      -2,648      -2,685
73.40 Adjustments in expired accounts 
        (net)...........................          -5
73.45 Adjustments in unexpired accounts.          -7
      Unpaid obligations, end of year:

74.40   Obligated balance, end of year..         586         594         618
74.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............          41          41          41
                                           ---------   ---------  ----------
74.99     Total unpaid obligations, end 
            of year.....................         627         635         659
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.90 Outlays from new discretionary 
        authority.......................       2,011       2,134       2,197
86.93 Outlays from discretionary 
        balances........................         506         514         488
                                           ---------   ---------  ----------
87.00   Total outlays (gross)...........       2,517       2,648       2,685
----------------------------------------------------------------------------

    Offsets:
      Against gross budget authority and outlays:

        Offsetting collections (cash) 
            from:
88.40     Non-Federal sources...........         -21         -14         -24
88.45     Offsetting governmental 
            collections from the public.        -101        -113        -108
                                           ---------   ---------  ----------
88.90       Total, offsetting 
              collections (cash)........        -122        -127        -132
      Against gross budget authority only:

88.95   From Federal sources: Change in 
          receivables and unpaid, 
          unfilled orders...............          25
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................       2,500       2,512       2,584
90.00 Outlays...........................       2,395       2,521       2,553
---------------------------------------------------------------------------

                 Summary of Budget Authority and Outlays

                        (in millions of dollars)

                                     1999 actual  2000 est.   2001 est.
Enacted/requested:
  Budget Authority..................       2,500       2,512       2,584
  Outlays...........................       2,395       2,521       2,553
Supplemental proposal:
  Budget Authority..................                      20
  Outlays...........................                      16           3
                                    ------------------------------------
Total:
  Budget Authority..................       2,500       2,532       2,584
  Outlays...........................       2,395       2,537       2,556
                                    ====================================

    This appropriation provides funding for mission support and 
includes: safety, mission assurance, engineering and advanced concepts 
activities supporting agency programs; salaries and related expenses in 
support of research in NASA field installations; design, repair, 
rehabilitation and modification of institutional facilities and 
construction of new institutional facilities; and other operations 
activities supporting conduct of agency programs.

Performance Objectives

    Safety, mission assurance, engineering, and advanced concepts.--The 
goal of this program is to invest in the safety and success of NASA 
missions by assuring that sound and robust policies, processes, and 
tools for safety, reliability,

[[Page 1057]]

quality assurance, and engineering disciplines are in place and applied 
throughout NASA. The program also examines long-term technology 
requirements for NASA's strategic objectives.

    Research and program management.--This activity provides for the 
salaries, travel support, other personnel expenses of the entire NASA 
civil service workforce, and includes vital support to the physical 
plant at the Centers and at NASA Headquarters.

    Construction of facilities.--This activity provides for facility 
construction activities to preserve NASA's infrastructure; environmental 
compliance and restoration activities, design of facilities projects, 
and advanced planning related to future facilities needs. In 1999-2001, 
activities in support of construction projects to repair and modernize 
the basic infrastructure and institutional facilities at NASA centers 
will continue, as well as activities in support of environmental 
compliance and restoration requirements.

    The 2002 budget estimate for this account is $2.6 billion.

               Object Classification (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0112-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

      Direct obligations:

        Personnel compensation:
11.1      Full-time permanent...........       1,201       1,264       1,343
11.3      Other than full-time permanent          28          21          25
11.5      Other personnel compensation..          28          27          37
11.8      Special personal services 
            payments....................          11          12          14
                                           ---------   ---------  ----------
11.9        Total personnel compensation       1,268       1,324       1,419
12.1    Civilian personnel benefits.....         270         276         314
13.0    Benefits for former personnel...          11          10
21.0    Travel and transportation of 
          persons.......................          48          52          53
22.0    Transportation of things........           5           5           5
23.1    Rental payments to GSA..........          15          14          13
23.3    Communications, utilities, and 
          miscellaneous charges.........          33          31          29
24.0    Printing and reproduction.......           6           6           5
25.1    Advisory and assistance services           6           6           5
25.2    Other services..................         224         214         195
25.3    Purchases of goods and services 
          from Government accounts......          26          25          23
25.4    Operation and maintenance of 
          facilities....................         139         133         121
25.5    Research and development 
          contracts.....................         129         123         112
25.6    Medical care....................           6           6           5
25.7    Operation and maintenance of 
          equipment.....................          90          86          78
26.0    Supplies and materials..........          36          34          31
31.0    Equipment.......................          46          43          40
32.0    Land and structures.............         144         137         125
41.0    Grants, subsidies, and 
          contributions.................           4           4           4
                                           ---------   ---------  ----------
99.0      Subtotal, direct obligations..       2,506       2,529       2,577
99.0  Reimbursable obligations..........          97         127         132
                                           ---------   ---------  ----------
99.9    Total new obligations...........       2,603       2,656       2,709
---------------------------------------------------------------------------

                              Personnel Summary

----------------------------------------------------------------------------
Identification code 80-0112-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------
    Direct:
1001  Total compensable workyears: Full-
        time equivalent employment......      18,178      18,031      18,641
    Reimbursable:
2001  Total compensable workyears: Full-
        time equivalent employment......         100         100         100
---------------------------------------------------------------------------

                                

                        Research and Development

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0108-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    New budget authority (gross), detail:
      Spending authority from offsetting 
          collections:

        Discretionary:
68.00     Offsetting collections (cash).          10          19
68.10     From Federal sources: Change 
            in receivables and unpaid, 
            unfilled orders.............         -10         -19
                                           ---------   ---------  ----------
68.90       Spending authority from 
              offsetting collections 
              (total discretionary).....
----------------------------------------------------------------------------

    Change in unpaid obligations:
      Unpaid obligations, start of year:

72.40   Obligated balance, start of year          51          29
72.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............          29          19
                                           ---------   ---------  ----------
72.99     Total unpaid obligations, 
            start of year...............          80          48
73.20 Total outlays (gross).............         -28         -48
73.40 Adjustments in expired accounts 
        (net)...........................          -4
      Unpaid obligations, end of year:

74.40   Obligated balance, end of year..          29
74.95   From Federal sources: 
          Receivables and unpaid, 
          unfilled orders...............          19
                                           ---------   ---------  ----------
74.99     Total unpaid obligations, end 
            of year.....................          48
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.93 Outlays from discretionary 
        balances........................          28          48
----------------------------------------------------------------------------

    Offsets:
      Against gross budget authority and outlays:

88.45   Offsetting collections (cash) 
          from: Offsetting governmental 
          collections from the public...         -10         -19
      Against gross budget authority only:

88.95   From Federal sources: Change in 
          receivables and unpaid, 
          unfilled orders...............          10          19
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................
90.00 Outlays...........................          18          29
---------------------------------------------------------------------------

    Since FY 1995 NASA's Research and Development activities have been 
performed in Human Space Flight; Science, Aeronautics and Technology; 
and Mission Support. This account shows spending from balances prior to 
the account restructuring.

                                

              Space Flight, Control and Data Communications

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0105-0-1-252      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Change in unpaid obligations:
72.40 Unpaid obligations, start of year: 
        Obligated balance, start of year          20          14           2
73.20 Total outlays (gross).............          -2         -12          -2
73.40 Adjustments in expired accounts 
        (net)...........................          -4
74.40 Unpaid obligations, end of year: 
        Obligated balance, end of year..          14           2
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.93 Outlays from discretionary 
        balances........................           2          12           2
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................
90.00 Outlays...........................           2          12           2
---------------------------------------------------------------------------

    Since FY 1995 NASA's Space Flight, Control and Data Communications 
activities have been performed in Human Space Flight; Science, 
Aeronautics and Technology; and Mission Support. This account shows 
spending from balances prior to the account restructuring.

                                

                       Construction of Facilities

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0107-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Obligations by program activity:
00.01 Supporting activity...............           7          13
00.02 Space transportation..............           5
00.04 Aeronautical research and 
        technology......................           4
                                           ---------   ---------  ----------
10.00   Total new obligations...........          16          13
----------------------------------------------------------------------------

[[Page 1058]]



    Budgetary resources available for obligation:
21.40 Unobligated balance available, 
        start of year...................          29          13
23.95 Total new obligations.............         -16         -13
24.40 Unobligated balance available, end 
        of year.........................          13
----------------------------------------------------------------------------

    Change in unpaid obligations:
72.40 Unpaid obligations, start of year: 
        Obligated balance, start of year          30          18           6
73.10 Total new obligations.............          16          13
73.20 Total outlays (gross).............         -27         -25          -6
73.40 Adjustments in expired accounts 
        (net)...........................          -1
74.40 Unpaid obligations, end of year: 
        Obligated balance, end of year..          18           6
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.93 Outlays from discretionary 
        balances........................          27          25           6
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................
90.00 Outlays...........................          26          25           6
---------------------------------------------------------------------------

    Since FY 1995 NASA's Construction of Facilities activities have been 
performed in Human Space Flight; Science, Aeronautics and Technology; 
and Mission Support. This account shows spending from balances prior to 
the account restructuring.

               Object Classification (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0107-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------
25.2  Other services....................           1           1
32.0  Land and structures...............          15          12
                                           ---------   ---------  ----------
99.9    Total new obligations...........          16          13
---------------------------------------------------------------------------

                                

                     Research and Program Management

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0103-0-1-999      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Change in unpaid obligations:
72.40 Unpaid obligations, start of year: 
        Obligated balance, start of year           1
73.40 Adjustments in expired accounts 
        (net)...........................          -1
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................
90.00 Outlays...........................
---------------------------------------------------------------------------

    Since FY 1995 NASA's Research and Program Management activities have 
been performed in Mission Support. This account shows spending from 
balances prior to the account restructuring.

                                

                       Office of Inspector General

    For necessary expenses of the Office of Inspector General in 
carrying out the Inspector General Act of 1978, as amended, 
[$20,000,000] $22,000,000. (Departments of Veterans Affairs and Housing 
and Urban Development, and Independent Agencies Appropriations Act, 
2000.)

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0109-0-1-252      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Obligations by program activity:
10.00 Total new obligations.............          20          20          22
----------------------------------------------------------------------------

    Budgetary resources available for obligation:
22.00 New budget authority (gross)......          20          20          22
23.95 Total new obligations.............         -20         -20         -22
----------------------------------------------------------------------------

    New budget authority (gross), detail:
      Discretionary:

40.00   Appropriation...................          20          20          22
----------------------------------------------------------------------------

    Change in unpaid obligations:
72.40 Unpaid obligations, start of year: 
        Obligated balance, start of year           2           3           5
73.10 Total new obligations.............          20          20          22
73.20 Total outlays (gross).............         -19         -20         -21
74.40 Unpaid obligations, end of year: 
        Obligated balance, end of year..           3           5           5
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.90 Outlays from new discretionary 
        authority.......................          18          18          19
86.93 Outlays from discretionary 
        balances........................           1           2           2
                                           ---------   ---------  ----------
87.00   Total outlays (gross)...........          19          20          21
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................          20          20          22
90.00 Outlays...........................          19          20          21
---------------------------------------------------------------------------

    The mission of the Office of Inspector General is to conduct audits 
and investigations of agency activities. The Inspector General keeps the 
Administrator informed of problems and deficiencies in agency programs 
and operations.

    The 2002 budget estimate for this account is $22 million.

               Object Classification (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-0109-0-1-252      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------
11.1  Personnel compensation: Full-time 
        permanent.......................          15          16          17
12.1  Civilian personnel benefits.......           3           3           3
21.0  Travel and transportation of 
        persons.........................           1           1           2
25.2  Other services....................           1
                                           ---------   ---------  ----------
99.9    Total new obligations...........          20          20          22
---------------------------------------------------------------------------

                              Personnel Summary

----------------------------------------------------------------------------
Identification code 80-0109-0-1-252      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------
1001  Total compensable workyears: Full-
        time equivalent employment......         191         210         213
---------------------------------------------------------------------------

                                

                               Trust Funds

           Science, Space, and Technology Education Trust Fund

              Unavailable Collections (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-8978-0-7-503      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------
    Balance, start of year:
01.99 Balance, start of year............          18          15          15
    Receipts:
02.01 Earnings on investments; Science, 
        Space and Technology Education, 
        Trust Fund......................          -2           1           1
                                           ---------   ---------  ----------
04.00 Total: Balances and collections...          16          16          16
    Appropriation:
05.01 Science, space, and technology 
        education trust fund............          -1          -1          -1
                                           ---------   ---------  ----------
07.99 Total balance, end of year........          15          15          15
---------------------------------------------------------------------------

               Program and Financing (in millions of dollars)

----------------------------------------------------------------------------
Identification code 80-8978-0-7-503      1999 actual   2000 est.   2001 est.
----------------------------------------------------------------------------

    Obligations by program activity:
10.00 Total new obligations (object 
        class 41.0).....................           1
----------------------------------------------------------------------------

    Budgetary resources available for obligation:
22.00 New budget authority (gross)......           1           1           1
23.95 Total new obligations.............          -1
----------------------------------------------------------------------------

[[Page 1059]]



    New budget authority (gross), detail:
      Mandatory:

60.27   Appropriation (trust fund, 
          indefinite)...................           1           1           1
----------------------------------------------------------------------------

    Change in unpaid obligations:
73.10 Total new obligations.............           1
73.20 Total outlays (gross).............          -1          -1          -1
----------------------------------------------------------------------------

    Outlays (gross), detail:
86.97 Outlays from new mandatory 
        authority.......................           1           1           1
----------------------------------------------------------------------------

    Net budget authority and outlays:
89.00 Budget authority..................           1           1           1
90.00 Outlays...........................           1           1           1
----------------------------------------------------------------------------

    Memorandum (non-add) entries:
92.01 Total investments, start of year: 
        U.S. securities: Par value......          17          13          17
92.02 Total investments, end of year: 
        U.S. securities: Par value......          13          17          17
---------------------------------------------------------------------------

                                

                        Administrative Provisions

    Notwithstanding the limitation on the availability of funds 
appropriated for ``Human space flight'', ``Science, aeronautics and 
technology'', or ``Mission support'' by this appropriations Act, when 
any activity has been initiated by the incurrence of obligations for 
construction of facilities as authorized by law, such amount available 
for such activity shall remain available until expended. This provision 
does not apply to the amounts appropriated in ``Mission support'' 
pursuant to the authorization for [repair, rehabilitation and 
modification of facilities,] minor revitalization and construction of 
[new facilities and additions to existing] facilities, and facility 
planning and design.
    Notwithstanding the limitation on the availability of funds 
appropriated for ``Human space flight'', ``Science, aeronautics and 
technology'', or ``Mission support'' by this appropriations Act, the 
amounts appropriated for construction of facilities shall remain 
available until September 30, [2002] 2003.
    Notwithstanding the limitation on the availability of funds 
appropriated for ``Mission support'' and ``Office of Inspector 
General'', amounts made available by this Act for personnel and related 
costs and travel expenses of the National Aeronautics and Space 
Administration shall remain available until September 30, [2000] 2001 
and may be used to enter into contracts for training, investigations, 
costs associated with personnel relocation, and for other services, to 
be provided during the next fiscal year. Funds for announced prizes 
otherwise authorized shall remain available, without fiscal year 
limitation, until the prize is claimed or the offer is withdrawn.
    [Unless otherwise provided for in this Act or in the joint 
explanatory statement of the committee of conference accompanying this 
Act, no part of the funds appropriated for ``Human space flight'' may be 
used for the development of the International Space Station in excess of 
the amounts set forth in the budget estimates submitted as part of the 
budget request for fiscal year 2000.] (Departments of Veterans Affairs 
and Housing and Urban Development, and Independent Agencies 
Appropriations Act, 2000.)
