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

                         THE BUDGET FOR FISCAL YEAR 1999

    [[Page 985]]

                  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, and
    modification of real and personal property, 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, [$5,506,500,000]
    $5,511,000,000, to remain available until September 30, [1999: Provided,
    That of the $2,351,300,000 made available under this heading for Space
    Station activities, only $1,500,000,000 shall be available before March
    31, 1998] 2000.
        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
    2000, $2,134,000,000; for fiscal year 2001, $1,933,000,000; for fiscal
    year 2002, $1,766,000,000; for fiscal year 2003, $1,546,000,000; for
    fiscal year 2004, $350,000,000. (Departments of Veterans Affairs and
    Housing and Urban Development, and Independent Agencies Appropriations
    Act, 1998.)

                   Program and Financing (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0111-0-1-252      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Obligations by program activity:
          Direct program:

    00.01   Space station...................       2,088       2,273       2,272
    00.02   US/Russian cooperation and
              program assurance.............         230         137           3
    00.03   Payload and utilization
              operations....................         267         325         184
    00.04   Space shuttle...................       3,001       2,849       3,052
    09.01 Reimbursable program..............          69          71         200
                                               ---------   ---------  ----------
    10.00   Total obligations...............       5,655       5,655       5,711
    ----------------------------------------------------------------------------

        Budgetary resources available for obligation:
    21.40 Unobligated balance available,
            start of year: Uninvested.......         222         226         149
    22.00 New budget authority (gross)......       5,609       5,578       5,711
    22.22 Unobligated balance transferred
            from other accounts.............          50
                                               ---------   ---------  ----------
    23.90   Total budgetary resources
              available for obligation......       5,881       5,804       5,860
    23.95 New obligations...................      -5,655      -5,655      -5,711
    24.40 Unobligated balance available, end
            of year: Uninvested.............         226         149         149
    ----------------------------------------------------------------------------

        New budget authority (gross), detail:
          Current:

    40.00   Appropriation...................       5,363       5,507       5,511
    42.00   Transferred from other accounts.         177
                                               ---------   ---------  ----------
    43.00     Appropriation (total).........       5,540       5,507       5,511
          Permanent:

            Spending authority from
                offsetting collections:
    68.00     Offsetting collections (cash).          84          71         200
    68.10     Change in orders on hand from
                Federal sources.............         -15
                                               ---------   ---------  ----------
    68.90       Spending authority from
                  offsetting collections
                  (total)...................          69          71         200
                                               ---------   ---------  ----------
    70.00   Total new budget authority
              (gross).......................       5,609       5,578       5,711
    ----------------------------------------------------------------------------

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

    72.40   Obligated balance: Uninvested...       1,770       1,700       1,708
    72.95   Orders on hand from Federal
              sources.......................          48          33          33
                                               ---------   ---------  ----------
    72.99     Total unpaid obligations,
                start of year...............       1,818       1,733       1,741
    73.10 New obligations...................       5,655       5,655       5,711
    73.20 Total outlays (gross).............      -5,740      -5,647      -5,674
    73.40 Adjustments in expired accounts...          -1
          Unpaid obligations, end of year:

    74.40   Obligated balance: Uninvested...       1,700       1,708       1,745
    74.95   Orders on hand from Federal
              sources.......................          33          33          33
                                               ---------   ---------  ----------
    74.99     Total unpaid obligations, end
                of year.....................       1,733       1,741       1,778
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.90 Outlays from new current authority       3,808       3,651       3,654
    86.93 Outlays from current balances.....       1,865       1,925       1,820
    86.97 Outlays from new permanent
            authority.......................          33          71         200
    86.98 Outlays from permanent balances...          34
                                               ---------   ---------  ----------
    87.00   Total outlays (gross)...........       5,740       5,647       5,674
    ----------------------------------------------------------------------------

        Offsets:
          Against gross budget authority and outlays:

            Offsetting collections (cash)
                from:
    88.40     Non-Federal sources...........         -35         -15         -11
    88.45     Offsetting governmental
                collections.................         -49         -56        -189
                                               ---------   ---------  ----------
    88.90       Total, offsetting
                  collections (cash)........         -84         -71        -200
    88.95 Change in orders on hand from
            Federal sources.................          15
    ----------------------------------------------------------------------------

        Net budget authority and outlays:
    89.00 Budget authority..................       5,540       5,507       5,511
    90.00 Outlays...........................       5,656       5,576       5,474
    ---------------------------------------------------------------------------

        This appropriation provides funding for human space flight
    activities, including development of the Space Station, the Space
    Station research program, and operation of the Space Shuttle. This
    includes support of planned cooperative activities with Russia, upgrades
    to the performance and safety of the Space Shuttle, and required
    construction projects in direct support of Space Station and Space
    Shuttle programs.

    Performance Objectives

        Space Station.--The Space Station will be 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 advanced
    appropriation for the complete development of the Station with Station
    assembly beginning in mid-1998 and finishing by the end of 2003. With
    the first launch to assemble this unique orbital laboratory only a few
    months away, the budget includes sufficient funding to keep subsequent
    assembly missions on schedule and provide a long-term solution to the
    safe return of the full complement of Station crewmembers.

        In 1997, node and laboratory module fabrication were completed, the
    node was delivered to the launch site, and qualification testing of
    flight hardware components continued. Activities are well underway to
    support crew training, payload processing, and hardware element
    processing requirements. In 1998, continued fabrication of flight
    hardware, qualification testing, and assembly and integration will be
    the focus of the program. First element launch is scheduled for the
    summer of 1998. In 1999, plans are to complete phase 2 (the first ten
    assembly flights) of the Station.

        U.S./Russian Cooperation and Program Assurance.--As part of an
    operating plan approved in May 1997, the U.S./Russian budget line was
    discontinued, and a new budget line entitled U.S./Russian Cooperation
    and Program Assurance was established. It includes two activities, U.S./
    Russian Cooperation and Russian Program Assurance (RPA). U.S./Rus-

    [[Page 986]]

    sian Cooperation continues the support to the Russian Space Agency,
    including the cooperative use of Mir. The RPA budget was established to
    implement contingency plans in response to the slippage of the Russian
    service module (SM) to the Space Station, from May 1998 to December
    1998. The United States and Russia are continuing a program of joint
    space missions. In 1997, three Shuttle flights to Mir took place,
    highlighted by the continual presence of American astronauts aboard the
    Mir conducting scientific research. Flight hardware to conduct
    experiments has been and will continue to be placed on the Mir. These
    flights provide valuable opportunities to gain experience in working
    with our Russian partners, which will be crucial to the success of
    building and operating the International Space Station (ISS). Two
    additional flights are planned in FY 1998, completing phase I of this
    cooperative precursor to Space Station.

        The RPA provides contingency planning funds to address ISS program
    requirements resulting from delays 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 SM. The ISS
    program is purchasing, from the U.S. Naval Research Laboratory (NRL), an
    interim control module (ICM) to provide attitude control and reboost
    functions for continuation of the ISS assembly sequence in case the
    Russian SM is launched later than December 1998. The NRL's ICM will be
    prepared for a February 1999 launch and will be attached to the back of
    the Russian built functional cargo block (FGB). If the SM is launched in
    December 1998, the ICM will be reconfigured to be attached to the SM.
    The ICM would then be able to dock to the back of the SM in 1999 to back
    up any shortfall of Russian Progress fuel resupply vehicles.

        Payload and Utilization Operations.--These funds will support the
    mission planning and hardware preparation activities required to support
    the payload and experiment infrastructure, including the Spacelab. In
    1997-1998, 3 module missions (MSL-1 reflight and Neurolab) will be
    flown, along with 2 pallet missions. The Spacelab program is scheduled
    to be terminated in 1998, following the Neurolab mission. In FY 1999,
    one (Spacelab) science mission will be supported, in addition to seven
    assembly flights for the ISS.

        Activities funded by the Payload Processing budget support the
    technical expertise and facilities necessary to perform payload buildup,
    test and checkout, integration, servicing, transportation and
    installation into the launch vehicle. In FY 1998, over 20 major and
    secondary payloads will be supported; in FY 1999, a similar number will
    be supported, including major hardware for ISS assembly. Advanced
    Projects pursues advanced technology developments for future human space
    flight requirements. Under this program, the X-38 experimental vehicle
    is being designed to demonstrate the technology and processes required
    to produce a crew return vehicle for the ISS. Beginning in FY 1999,
    funding for Advanced Projects other than X-38 and X-38 transition costs,
    will be terminated. The Engineering and Technical Base provides basic
    engineering and technical capabilities to support the NASA mission
    assigned to the programs carried out by the Human Space Flight Centers.
    These funds support a core environment dedicated to multiprogram
    laboratories, test facilities and associated systems, including a skill
    base to respond to research, testing and simulations.

        Space Shuttle.--The Space Shuttle is a partially reusable space
    vehicle that provides several unique capabilities to the United States
    space program. These include launching spacecraft and retrieving
    payloads from orbit for reuse, servicing and repairing satellites in
    space, safely transporting humans to and from space, and operating and
    returning space laboratories. In FY 1998, six missions are planned,
    including the final two flights to the Russian Mir Space Station, and
    the initial assembly flight for the ISS. Activities supporting
    consolidation of Shuttle contracts into one Space Flight Operations
    contract were completed in FY 1996. This will result in significant
    reductions in the cost of operating the Space Shuttle through FY 2000
    and beyond, with no impact on safety, performance or schedule.

        In 1999, eight shuttle flights are planned, seven of which are in
    support of ISS assembly. Upgrades to the shuttle to increase its
    reliability and maintainability will be continued. Major Shuttle
    upgrades, including the Super Light Weight Tank and the Alternate Turbo
    Pump, will be completed with initial flights planned to occur in 1998.

                   Object Classification (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0111-0-1-252      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

          Direct obligations:

    22.0    Transportation of things........           3           3           3
    23.3    Communications, utilities, and
              miscellaneous charges.........          63          63          62
    24.0    Printing and reproduction.......           4           4           4
    25.1    Advisory and assistance services       1,197       1,197       1,181
    25.2    Other services..................         308         308         304
    25.3    Purchases of goods and services
              from Government accounts......         128         128         126
    25.4    Operation and maintenance of
              facilities....................          91          91          90
    25.5    Research and development
              contracts.....................       3,480       3,478       3,433
    26.0    Supplies and materials..........          92          92          91
    31.0    Equipment.......................          85          85          84
    32.0    Land and structures.............         131         131         129
    41.0    Grants, subsidies, and
              contributions.................           4           4           4
                                               ---------   ---------  ----------
    99.0      Subtotal, direct obligations..       5,586       5,584       5,511
    99.0  Reimbursable obligations..........          69          71         200
                                               ---------   ---------  ----------
    99.9    Total obligations...............       5,655       5,655       5,711
    ---------------------------------------------------------------------------

                       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, and modification of real and personal property, 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,
    [$5,690,000,000] $5,457,400,000, to remain available until September 30,
    [1999] 2000. (Departments of Veterans Affairs and Housing and Urban
    Development, and Independent Agencies Appropriations Act, 1998.)

                   Program and Financing (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0110-0-1-999      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Obligations by program activity:
          Direct program:

    00.01   Space science...................       2,039       2,093       2,057
    00.02   Life and microgravity science...         396         249         240
    00.06   Earth science...................       1,403       1,597       1,374
    00.07   Mission communication services..         428         387         381
    00.08   Academic programs...............         134         155         102
    00.09   Aeronautics and space
              transportation technology.....       1,409       1,424       1,314
    09.01 Reimbursable program..............         440         643         653
                                               ---------   ---------  ----------
    10.00   Total obligations...............       6,249       6,548       6,121
    ----------------------------------------------------------------------------

        Budgetary resources available for obligation:
    21.40 Unobligated balance available,
            start of year: Uninvested.......       1,186         508         283
    22.00 New budget authority (gross)......       6,030       6,323       6,110
    22.21 Unobligated balance transferred to
            other accounts..................         -94
    22.30 Unobligated balance expiring......        -365
                                               ---------   ---------  ----------
    23.90   Total budgetary resources
              available for obligation......       6,757       6,831       6,393
    23.95 New obligations...................      -6,249      -6,548      -6,121

    [[Page 987]]

    24.40 Unobligated balance available, end
            of year: Uninvested.............         508         283         272
    ----------------------------------------------------------------------------

        New budget authority (gross), detail:
          Current:

    40.00   Appropriation...................       5,767       5,690       5,457
    40.79   Line item veto cancellation.....                     -10
    41.00   Transferred to other accounts...        -177
                                               ---------   ---------  ----------
    43.00     Appropriation (total).........       5,590       5,680       5,457
    50.00   Reappropriation.................                     365
    50.35   Reappropriation rescinded.......                    -365
                                               ---------   ---------  ----------
    53.00     Reappropriation (total).......
          Permanent:

            Spending authority from
                offsetting collections:
    68.00     Offsetting collections (cash).         451         643         653
    68.10     Change in orders on hand from
                Federal sources.............         -11
                                               ---------   ---------  ----------
    68.90       Spending authority from
                  offsetting collections
                  (total)...................         440         643         653
                                               ---------   ---------  ----------
    70.00   Total new budget authority
              (gross).......................       6,030       6,323       6,110
    ----------------------------------------------------------------------------

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

    72.40   Obligated balance: Uninvested...       3,316       3,222       3,537
    72.95   Orders on hand from Federal
              sources.......................         316         305         305
                                               ---------   ---------  ----------
    72.99     Total unpaid obligations,
                start of year...............       3,632       3,527       3,842
    73.10 New obligations...................       6,249       6,548       6,121
    73.20 Total outlays (gross).............      -6,340      -6,233      -6,308
    73.40 Adjustments in expired accounts...         -15
          Unpaid obligations, end of year:

    74.40   Obligated balance: Uninvested...       3,222       3,537       3,350
    74.95   Orders on hand from Federal
              sources.......................         305         305         305
                                               ---------   ---------  ----------
    74.99     Total unpaid obligations, end
                of year.....................       3,527       3,842       3,655
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.90 Outlays from new current authority       2,535       2,408       2,314
    86.93 Outlays from current balances.....       3,380       3,182       3,341
    86.97 Outlays from new permanent
            authority.......................         111         643         653
    86.98 Outlays from permanent balances...         316
                                               ---------   ---------  ----------
    87.00   Total outlays (gross)...........       6,340       6,233       6,308
    ----------------------------------------------------------------------------

        Offsets:
          Against gross budget authority and outlays:

            Offsetting collections (cash)
                from:
    88.40     Non-Federal sources...........         -22         -47         -29
    88.45     Offsetting governmental
                collections.................        -429        -596        -624
                                               ---------   ---------  ----------
    88.90       Total, offsetting
                  collections (cash)........        -451        -643        -653
    88.95 Change in orders on hand from
            Federal sources.................          11
    ----------------------------------------------------------------------------

        Net budget authority and outlays:
    89.00 Budget authority..................       5,590       5,680       5,457
    90.00 Outlays...........................       5,889       5,590       5,655
    ---------------------------------------------------------------------------

        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.

        Funding for Space Science, Earth Science, Aeronautics and Space
    Transportation Technology is proposed as part of the Research Fund for
    America. This proposal highlights the Administration's priority to
    providing needed and sustained investments in important Federal research
    programs on a deficit neutral basis. A discussion of the Research Fund
    for America, and two other funds for the environment and transportation,
    can be found in Section II of the Budget volume.

    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 flight missions which provide major
    space-based facilities. In 1997, highlights included the July 4 landing
    of the Pathfinder spacecraft on Mars, the first Mars landing since the
    Viking missions in 1976 and the first ever to use air bags to cushion
    impact on the surface. Shortly after Pathfinder's landing, the Sojourner
    rover began its own exploration of nearby rocks and other features. The
    images from both craft were posted to the Internet, where more than 500
    million ``hits'' were recorded by the end of July. The international
    Cassini mission left Earth bound for Saturn on October 15, 1997. With
    the European Space Agency's Huygens probe and a high-gain antenna
    provided by the Italian Space Agency, Cassini will arrive at Saturn July
    1, 2004. Also, astronauts flawlessly performed major maintenance and
    upgrades to the orbiting Hubble Space Telescope, replacing older
    hardware with two dramatically improved instruments that are helping
    astronomers probe the universe in greater detail than ever before. This
    year, Hubble uncovered over 1,000 bright, young star clusters bursting
    to life in a brief, intense, brilliant ``fireworks show'' at the heart
    of a nearby pair of colliding galaxies. The Hubble image of the galactic
    collision was printed on the front pages of newspapers around the world
    as well as on the cover of Newsweek magazine. Images captured during
    Galileo's closest flyby of Europa on February 20 showed features of the
    Jovian moon, lending credence to the possibility of hidden, subsurface
    oceans. The findings generated new questions about the possibility of
    life on Europa. Scientists using the joint European Space Agency/NASA
    Solar and Heliospheric Observatory (SOHO) spacecraft have discovered
    ``jet streams'' or ``rivers'' of hot, electrically charged plasma
    flowing beneath the surface of the sun. These new findings will help
    scientists understand the famous 11-year sunspot cycle and associated
    increases in solar activity that can disrupt the Earth's power and
    communications systems.

        To capitalize on these enormous successes during the past year, the
    NASA budget request for FY 1999 once again highlights Space Science.
    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 beyond Earth. In addition to planning for
    the deployment of powerful telescopes to detect Earth-like planets
    elsewhere in our galaxy, planning has begun for a Europa mission to
    launch in 2003 to directly observe potential subsurface oceans on
    Europa, and the Mars Surveyor Program is augmented to enhance the Mars
    2001 lander. NASA will also initiate a series of Solar-Terrestrial
    Probes to track solar phenomena and their impact on the Earth, and
    initiate mission development for a gamma-ray telescope to understand the
    final stages of stars' lives and to seek out the most extreme
    environments in the universe.

        Development activities will continue in 1998-1999 on the Advance X-
    ray Astrophysics Facility (AXAF) in support of a launch in early FY
    1999. Development activities continue on the Relativity (Gravity Probe-
    B) mission, which remains on schedule for launch in 2000. The Space
    Infrared Telescope Facility (SIRTF) initiates development in April 1998,
    with launch planned for December 2001. Development activities on the
    Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED)
    mission began in 1997, with launch planned in 2000. Development
    activities on the Stratospheric Observatory for Infrared Astronomy
    (SOFIA) continue to receive support. The Second Hubble Space Telescope
    (HST) servicing mission in February 1997 provided two new science
    instruments and other servicing, and the upgraded telescope is providing
    new insights into our universe by investigating objects in the near-
    infrared portion of the electromagnetic spectrum. Funding for HST
    continues to support operations, as well as preparation for the third
    servicing mission in 1999. Galileo's highly successful tour of Jupiter
    and its moons has

    [[Page 988]]

    been extended through 1999, with a focus on the moons Europa and Io.

        In Explorer missions, the Advanced Composition Explorer (ACE) was
    launched in August 1997 and development activities continue on the Far
    Ultraviolet Spectroscopy Explorer (FUSE) for a launch in 1998.
    Development is also underway for the Microwave Anisotropy Probe (MAP)
    and Imager for Magnetosphere-to-Aurora Global Exploration (IMAGE)
    Medium-Class Explorer (MIDEX) missions. Three new Small (SMEX) missions
    were selected in 1997: the High Energy Spectroscopic Imager (HESSI) is
    to launch in 2000; the Galaxy Evolution Explorer (GALEX) will launch in
    2001; the Two Wide-Angle Neutral-Atom Spectrometers (TWINS) has been
    selected as a mission of opportunity, to be launched in 2001 or 2003
    aboard a currently undesignated U.S. Government mission. These missions
    emphasize reduced mission costs and accelerated launch schedules.

        The Mars Global Surveyor entered Mars orbit in September 1997, and
    funds are requested for the development of future Mars missions in 1998
    and beyond. The third Discovery-class mission, Lunar Prospector,
    launched in January 1998, the fourth, the Stardust mission, is to be
    launched in 1999. Two new Discovery missions were selected in 1997: the
    Comet Nucleus Tour (CONTOUR) to be launched in 2002; and Genesis, a
    solar wind sample return mission, to be launched in 2001. The New
    Millenium program is underway to provide flight demonstrations of
    critical new technologies which will greatly reduce the mass and cost of
    future science instruments and spacecraft subsystems, while maintaining
    or improving mission capabilities. Development activities continue on
    the Deep Space-1 and Deep Space-2 missions, scheduled for launch in July
    1998 and January 1999, respectively.

        The Space Science program is responsible for Agency-wide core
    technology development. Space Science is also undertaking an aggressive
    technology development effort to enable new missions to the outer
    planets, and to search for Earth-like planets around nearby stars. New
    technologies are also being pursued to enhance our capability to explore
    Mars robotically, and perhaps to confirm the past or current presence of
    life on that planet.

        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, materials science and biotechnology. In addition
    to conducting basic and applied research, this program provides the
    opportunity to refine the definition, design, and development of
    experiment hardware planned for use on the ISS. In FY 1998 five Shuttle
    missions involving Life and Microgravity Science are planned, including
    the USMP-4 mission and Neurolab, the final Spacelab series flight. The
    final two NASA/Mir missions are planned for 1998. The NASA/NIH Neurolab
    mission will continue the agency's efforts to expand its collaborative
    activities with the National Institutes of Health and other Federal
    agencies to maximize the return on science investments. In FY 1999, as
    assembly of the ISS continues, the program will fly one science mission
    (STS-95) on a Spacelab carrier with ISS precursor science experiments.
    The U.S. Laboratory will be launched for ISS mid-year, which will allow
    Life and Microgravity hardware and experiments to be established aboard
    the ISS and will begin a new era of research.

        Earth Science.--The purpose of NASA's Earth Science (ES) enterprise
    is to understand the total Earth system and the effects of natural and
    human-induced changes on the global environment. ES 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, ES is providing the scientific foundation
    needed for the complex policy choices that lie ahead on the road to
    sustainable development. ES 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 ES science and technology in
    the public and private sectors.

        The Earth Observing System (EOS), the centerpiece of Earth Science,
    is a program of multiple spacecraft missions (the AM, PM, Chemistry
    series, Landsat 7, and others) and interdisciplinary science
    investigations aimed at providing a 15-year data set of key parameters
    needed to understand global climate change. The first EOS satellite
    launches will be in 1998. Preceeding EOS are a number of individual
    satellite and Shuttle-based missions which are helping to reveal basic
    processes. The Upper Atmosphere Research Satellite, launched in 1991,
    collects data on atmospheric chemistry. The Total Ozone Mapping
    Spectrometer instrument, launched in 1978 and 1991, measures ozone
    distribution and depletion. Two total ozone mapping spectrometer
    instruments were launched in 1996, one on the Japanese Advanced Earth
    Observing System (ADEOS) mission and the other on a dedicated U.S. Earth
    probe. France and the U.S. collaborated on the Ocean Topography
    Experiment (TOPEX/Poseidon), launched in 1992, to study ocean topography
    and circulation. The NASA scatterometer, also launched on the Japanese
    ADEOS in 1996, provided 10 months of ocean winds data. The failure of
    Japan's ADEOS satellite meant the loss of the NASA scatterometer (as
    well as one of the two TOMS). NASA will launch QUIKSCAT in November 1998
    to minimize the loss of ocean winds data. In 1997 the Tropical Rainfall
    Measuring Mission (TRMM) began measuring tropical precipitation.
    Complementing EOS will be a series of small, rapid development Earth
    System Science Pathfinders (ESSP). Data from ES will be captured from
    the satellites, processed into useful data products, and broadly
    distributed by the EOS Data and Information System (EOSDIS). In FY 1997,
    NASA initiated a data purchase program designed to acquire data sets
    from private sources that are necessary to accomplish the broad research
    goals of Earth system science. The ES science program is essential to
    the discovery of new concepts and to the design of future missions. The
    ES research is coordinated through the U.S. Global Change Research
    Program (USGCRP), the Committee on the Environment and Natural Resources
    (CENR) Subcommittee on Global Change Research, and the various boards
    and committees at the National Academy of Sciences.

        Aeronautics and Space Transportation Technology.--The goal of this
    Enterprise is to pioneer long-term high risk, high payoff technologies
    that are effectively transferred to industry and government. This
    Enterprise has developed dramatic technology goals which are grouped
    into three areas: global civil aviation, revolutionary technology leaps,
    and access to space. These technology goals reflect the national
    priorities for aeronautics and space.

        Within Aeronautics, the High-Speed Research program continued to
    develop technologies to establish the viability of an economical and
    environmentally sound High Speed Civil Transport. This vehicle--if built
    by U.S. industry--could promote U.S. leadership in long-range commercial
    air travel markets of the next century. Development of this vehicle
    could offer returns of $200 billion in sales and 140,000 high-quality

    [[Page 989]]

    jobs for the United States. In FY 1997, a two-dimensional bifurcated
    inlet concept and a center-stick flight controller concept were selected
    for further research and evaluation. In FY 1999, funding is included to
    extend High-Speed Research to mitigate risk in two critical areas--
    propulsion and airframe materials and structures. In FY 1997, the
    Advanced Subsonic Technology program completed the set of National
    Airspace System operational scenarios in support of aviation capacity
    research. In FY 1998, the Aging Aircraft element will be completed with
    the field demonstrations on nondestructive evaluation prototypes that
    can locate cracks, corrosion and disbonds in aircraft fuselages. Funding
    is included to continue development of high payoff technologies that
    enable a safe, highly productive global air transportation system with
    reduced environmental impact.

        The High Performance Computing and Communications program
    demonstrated significant reductions in cost and time in performing
    three-dimensional aerodynamic simulations that reduced the development
    time for an extremely fuel-efficient, high pressure compressor by 50%.
    In FY 1998, this program's NASA Research & Education Network (NREN)
    begins activities supporting development of the Next Generation Internet
    (NGI) to increase quality, security and certainty of Internet
    transmissions on a network capable of 1,000 times the capacity of the
    1996 baseline. This initiative will involve several Federal agencies,
    including the Departments of Defense, Energy and Commerce, the National
    Science Foundation, and NASA. In FY 1997, research activities within the
    research and technology base developed innovative concepts, explored new
    areas of theory and created the computational models of the aeronautical
    principles that lead to more efficient design and operation of advanced
    aerospace systems. In FY 1998, the safety research will be initiated in
    support of the Administration's Aviation Safety initiative and in FY
    1999, the research and technology base will continue to develop advanced
    concepts and technologies that will allow safe, economical and
    environmentally compatible air transportation systems.

        The Space Transportation Technology program is developing new
    technologies aimed at revitalizing access to space. The technologies
    targeted will reduce launch costs dramatically over the next decade, and
    increase the safety and reliability of current and future generation
    launch systems. In 1997, the Reusable Launch Vehicle (RLV) program
    continued to pursue technology development, design and business planning
    activities in support of next-generation reusable systems, on the X-33
    and X-34 flight demonstrators. The X-33 and X-34 have completed their
    critical design reviews and initiated fabrication of flight hardware.
    Funding for the RLV program in 1998 and 1999 is included to continue X-
    33 and X-34 technology development, hardware fabrication and test, in
    preparation for the flight of the technology demonstrators, both of
    which will fly in 1999. The Advanced Space Transportation Program (ASTP)
    is developing key technologies to dramatically reduce space
    transportation costs across the mission spectrum. ASTP will focus on
    technological advances with the potential of reducing launch costs
    beyond RLV goals, as well as on developing technology required to
    support NASA strategic needs that are not currently addressed by RLV.
    Industry-led Future Space Launch trade studies in 1999 and 2000 will
    support an end-of-the-decade decision called for in the National Space
    Transportation Policy on the development of an operational launch system
    to reduce NASA's launch costs. $760 million in placeholder funds are set
    aside in the outyears to pursue existing, planned or new vehicles in
    response to this decision.

        The Commercial Technology Program's focus in FY 1997 has been to
    invest 10-15 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 strengthen
    the international competitiveness of key industry sectors. In FY 1997
    and 1998, the program will emphasize increasing commercial partnerships
    with industry and continue to refine and expand a technology and
    partnership database.

        Mission Communication Services.--The primary goal of this
    operational program is to provide highly reliable, cost-effective
    telecommunications services in support of NASA's science and aeronautics
    programs. Other U.S. agencies, international space-faring agencies, and
    U.S. commercial enterprises are supported on a reimbursable basis.
    Ground network, space network, and mission systems are provided under
    this program in support of planetary, deep space, Earth-orbiting,
    aeronautics, and suborbital systems.

        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
    from the elementary through graduate levels, and are directed at
    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.

                   Object Classification (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0110-0-1-999      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

          Direct obligations:

    22.0    Transportation of things........           4           4           4
    23.1    Rental payments to GSA..........           1           1
    23.2    Rental payments to others.......                                   1
    23.3    Communications, utilities, and
              miscellaneous charges.........          81          82          76
    24.0    Printing and reproduction.......           5           5           5
    25.1    Advisory and assistance services         669         680         630
    25.2    Other services..................         807         820         760
    25.3    Purchases of goods and services
              from Government accounts......         259         263         244
    25.4    Operation and maintenance of
              facilities....................          67          68          63
    25.5    Research and development
              contracts.....................       3,000       3,050       2,824
    25.7    Operation and maintenance of
              equipment.....................         133         135         125
    26.0    Supplies and materials..........          61          62          57
    31.0    Equipment.......................         199         202         187
    32.0    Land and structures.............          37          38          35
    41.0    Grants, subsidies, and
              contributions.................         486         495         457
                                               ---------   ---------  ----------
    99.0      Subtotal, direct obligations..       5,809       5,905       5,468
    99.0  Reimbursable obligations..........         440         643         653
                                               ---------   ---------  ----------
    99.9    Total obligations...............       6,249       6,548       6,121
    ---------------------------------------------------------------------------

                                 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, 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 for official
    reception and representation expenses; and purchase (not to exceed 33
    for replacement only) and hire of passenger motor vehicles;

    [[Page 990]]

    [$2,433,200,000] $2,476,600,000, to remain available until September 30,
    [1999] 2000. (Departments of Veterans Affairs and Housing and Urban
    Development, and Independent Agencies Appropriations Act, 1998.)

                   Program and Financing (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0112-0-1-999      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Obligations by program activity:
          Direct program:

    00.01   Safety, reliability and quality
              assurance.....................          41          37          36
    00.02   Space communication services....         287         210         179
    00.03   Research and program management.       2,059       2,093       2,095
    00.04   Construction of facilities......         166         153         150
                                               ---------   ---------  ----------
    01.00   Total direct program............       2,553       2,493       2,460
    09.01 Reimbursable program..............         133         122         132
                                               ---------   ---------  ----------
    10.00   Total obligations...............       2,686       2,615       2,592
    ----------------------------------------------------------------------------

        Budgetary resources available for obligation:
    21.40 Unobligated balance available,
            start of year: Uninvested.......         151         160         100
    22.00 New budget authority (gross)......       2,695       2,555       2,609
                                               ---------   ---------  ----------
    23.90   Total budgetary resources
              available for obligation......       2,846       2,715       2,709
    23.95 New obligations...................      -2,686      -2,615      -2,592
    24.40 Unobligated balance available, end
            of year: Uninvested.............         160         100         117
    ----------------------------------------------------------------------------

        New budget authority (gross), detail:
          Current:

    40.00   Appropriation...................       2,562       2,433       2,477
          Permanent:

            Spending authority from
                offsetting collections:
    68.00     Offsetting collections (cash).         106         122         132
    68.10     Change in orders on hand from
                Federal sources.............          27
                                               ---------   ---------  ----------
    68.90       Spending authority from
                  offsetting collections
                  (total)...................         133         122         132
                                               ---------   ---------  ----------
    70.00   Total new budget authority
              (gross).......................       2,695       2,555       2,609
    ----------------------------------------------------------------------------

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

    72.40   Obligated balance: Uninvested...         460         526         704
    72.95   Orders on hand from Federal
              sources.......................          79         106         106
                                               ---------   ---------  ----------
    72.99     Total unpaid obligations,
                start of year...............         539         632         810
    73.10 New obligations...................       2,686       2,615       2,592
    73.20 Total outlays (gross).............      -2,583      -2,437      -2,432
    73.40 Adjustments in expired accounts...         -11
          Unpaid obligations, end of year:

    74.40   Obligated balance: Uninvested...         526         704         862
    74.95   Orders on hand from Federal
              sources.......................         106         106         106
                                               ---------   ---------  ----------
    74.99     Total unpaid obligations, end
                of year.....................         632         810         968
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.90 Outlays from new current authority       1,989       1,931       1,966
    86.93 Outlays from current balances.....         479         383         336
    86.97 Outlays from new permanent
            authority.......................          76         122         132
    86.98 Outlays from permanent balances...          39
                                               ---------   ---------  ----------
    87.00   Total outlays (gross)...........       2,583       2,437       2,432
    ----------------------------------------------------------------------------

        Offsets:
          Against gross budget authority and outlays:

            Offsetting collections (cash)
                from:
    88.40     Non-Federal sources...........          -6         -31         -13
    88.45     Offsetting governmental
                collections.................        -100         -91        -119
                                               ---------   ---------  ----------
    88.90       Total, offsetting
                  collections (cash)........        -106        -122        -132
    88.95 Change in orders on hand from
            Federal sources.................         -27
    ----------------------------------------------------------------------------

        Net budget authority and outlays:
    89.00 Budget authority..................       2,562       2,433       2,477
    90.00 Outlays...........................       2,478       2,315       2,300
    ---------------------------------------------------------------------------

        This appropriation provides funding for mission support and
    includes: safety, reliability and quality assurance activities
    supporting agency programs; space communication services for NASA
    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, Reliability and Quality Assurance.--The goal of this program
    is to assure the safety and quality of NASA missions through the
    development, implementation and oversight of Agency-wide safety,
    engineering, reliability, maintainability, and quality assurance
    policies and procedures.

        Space Communication Services.--Activities included in this program
    provide for the tracking, telemetry, command, data acquisition,
    communications and data processing required by NASA flight projects. In
    1997-1999, the networks and support systems that accomplish these tasks
    will continue operation. Completion of the upgrade of the Tracking and
    Data Relay Satellite (TDRS) White Sands Complex and early development of
    the TDRS Replenishment Spacecraft occurred and will continue in 1997 and
    1998. Development of a remote ground terminal at Guam which will extend
    network capability by providing for coverage of the zone of exclusion
    will be completed in FY 1998. Development of the replenishment Tracking
    and Data Relay satellites is ongoing. The first satellite will be
    launched in late FY 1999. The NASA Integrated Services Network
    consolidated all NASA wide area network systems in FY 1997.

        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 core infrastructure;
    environmental compliance and restoration activities, design of
    facilities projects, and advanced planning related to future facilities
    needs. In 1997-1999, activities in support of discrete projects to
    repair and modernize the basic infrastructure and institutional
    facilities at NASA centers will be conducted, as well as activities in
    support of environmental compliance and restoration requirements.

                   Object Classification (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0112-0-1-999      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

          Direct obligations:

            Personnel compensation:
    11.1      Full-time permanent...........       1,214       1,216       1,218
    11.3      Other than full-time permanent          22          23          22
    11.5      Other personnel compensation..          24          24          23
    11.8      Special personal services
                payments....................           8           8           9
                                               ---------   ---------  ----------
    11.9        Total personnel compensation       1,268       1,271       1,272
    12.1    Civilian personnel benefits.....         252         253         253
    13.0    Benefits for former personnel...          31          31          15
    21.0    Travel and transportation of
              persons.......................          45          46          47
    22.0    Transportation of things........           6           3           3
    23.1    Rental payments to GSA..........          17          16          16
    23.2    Rental payments to others.......           1           1           1
    23.3    Communications, utilities, and
              miscellaneous charges.........          71          66          65
    24.0    Printing and reproduction.......           8           7           7
    25.1    Advisory and assistance services          41          38          37
    25.2    Other services..................         328         307         300
    25.3    Purchases of goods and services
              from Government accounts......          26          24          24
    25.4    Operation and maintenance of
              facilities....................          63          59          58
    25.5    Research and development
              contracts.....................         116         108         106
    25.6    Medical care....................           3           3           3
    25.7    Operation and maintenance of
              equipment.....................          64          60          58
    26.0    Supplies and materials..........          23          22          21
    31.0    Equipment.......................          35          33          32
    32.0    Land and structures.............         152         142         139
    41.0    Grants, subsidies, and
              contributions.................           3           3           3
                                               ---------   ---------  ----------

    [[Page 991]]

    99.0      Subtotal, direct obligations..       2,553       2,493       2,460
    99.0  Reimbursable obligations..........         133         122         132
                                               ---------   ---------  ----------
    99.9    Total obligations...............       2,686       2,615       2,592
    ---------------------------------------------------------------------------

                                  Personnel Summary

    ----------------------------------------------------------------------------
    Identification code 80-0112-0-1-999      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------
        Direct:
    1001  Total compensable workyears: Full-
            time equivalent employment......      19,793      19,274      18,434
        Reimbursable:
    2001  Total compensable workyears: Full-
            time equivalent employment......          90          90          85
    ---------------------------------------------------------------------------

                            Research and Development

                   Program and Financing (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0108-0-1-999      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Budgetary resources available for obligation:
    21.40 Unobligated balance available,
            start of year: Uninvested.......           1
    22.30 Unobligated balance expiring......          -1
                                               ---------   ---------  ----------
    23.90   Total budgetary resources
              available for obligation......
    ----------------------------------------------------------------------------

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

    68.00   Offsetting collections (cash)...          26          34
    68.10   Change in orders on hand from
              Federal sources...............         -26         -34
                                               ---------   ---------  ----------
    68.90     Spending authority from
                offsetting collections
                (total).....................
    ----------------------------------------------------------------------------

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

    72.40   Obligated balance: Uninvested...         230         104
    72.95   Orders on hand from Federal
              sources.......................          60          34
                                               ---------   ---------  ----------
    72.99     Total unpaid obligations,
                start of year...............         290         138
    73.20 Total outlays (gross).............        -127        -138
    73.40 Adjustments in expired accounts...         -25
          Unpaid obligations, end of year:

    74.40   Obligated balance: Uninvested...         104
    74.95   Orders on hand from Federal
              sources.......................          34
                                               ---------   ---------  ----------
    74.99     Total unpaid obligations, end
                of year.....................         138
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.93 Outlays from current balances.....         127         138
    ----------------------------------------------------------------------------

        Offsets:
          Against gross budget authority and outlays:

    88.45   Offsetting collections (cash)
              from: Offsetting governmental
              collections...................         -26         -34
    88.95 Change in orders on hand from
            Federal sources.................          26          34
    ----------------------------------------------------------------------------

        Net budget authority and outlays:
    89.00 Budget authority..................
    90.00 Outlays...........................         101         104
    ---------------------------------------------------------------------------

        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      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Budgetary resources available for obligation:
    21.40 Unobligated balance available,
            start of year: Uninvested.......           4
    22.30 Unobligated balance expiring......          -4
                                               ---------   ---------  ----------
    23.90   Total budgetary resources
              available for obligation......
    ----------------------------------------------------------------------------

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

    68.00   Offsetting collections (cash)...           3           2
    68.10   Change in orders on hand from
              Federal sources...............          -3          -2
                                               ---------   ---------  ----------
    68.90     Spending authority from
                offsetting collections
                (total).....................
    ----------------------------------------------------------------------------

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

    72.40   Obligated balance: Uninvested...         171          56
    72.95   Orders on hand from Federal
              sources.......................           5           2
                                               ---------   ---------  ----------
    72.99     Total unpaid obligations,
                start of year...............         176          58
    73.20 Total outlays (gross).............         -95         -58
    73.40 Adjustments in expired accounts...         -23
          Unpaid obligations, end of year:

    74.40   Obligated balance: Uninvested...          56
    74.95   Orders on hand from Federal
              sources.......................           2
                                               ---------   ---------  ----------
    74.99     Total unpaid obligations, end
                of year.....................          58
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.93 Outlays from current balances.....          95          58
    ----------------------------------------------------------------------------

        Offsets:
          Against gross budget authority and outlays:

    88.40   Offsetting collections (cash)
              from: Non-Federal sources.....          -3          -2
    88.95 Change in orders on hand from
            Federal sources.................           3           2
    ----------------------------------------------------------------------------

        Net budget authority and outlays:
    89.00 Budget authority..................
    90.00 Outlays...........................          92          56
    ---------------------------------------------------------------------------

        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      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Obligations by program activity:
    00.01 Supporting activity...............           9          26
    00.02 Space transportation..............           8           8
    00.03 Mission to Planet Earth...........           1
    00.04 Aeronautical research and
            technology......................          28          20
                                               ---------   ---------  ----------
    10.00   Total obligations...............          46          54
    ----------------------------------------------------------------------------

        Budgetary resources available for obligation:
          Unobligated balance available, start of year:

    21.40   Uninvested......................          98          54
    21.41   U.S. Securities: Par value......           2           2
                                               ---------   ---------  ----------
    21.99     Total unobligated balance,
                start of year...............         100          56
                                               ---------   ---------  ----------
    23.90   Total budgetary resources
              available for obligation......         100          56
    23.95 New obligations...................         -46         -54
          Unobligated balance available, end of year:

    24.40   Uninvested......................          54
    24.41   U.S. Securities: Par value......           2
                                               ---------   ---------  ----------
    24.99   Total unobligated balance, end
              of year.......................          56
    ----------------------------------------------------------------------------

        Change in unpaid obligations:
    72.40 Unpaid obligations, start of year:
            Obligated balance: Uninvested...         147          68          52
    73.10 New obligations...................          46          54
    73.20 Total outlays (gross).............        -122         -70         -52
    73.40 Adjustments in expired accounts...          -1
    74.40 Unpaid obligations, end of year:
            Obligated balance: Uninvested...          68          52
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.93 Outlays from current balances.....         122          70          52
    ----------------------------------------------------------------------------

    [[Page 992]]

        Net budget authority and outlays:
    89.00 Budget authority..................
    90.00 Outlays...........................         122          70          52
    ---------------------------------------------------------------------------

        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      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------
    25.2  Other services....................           5           5
    25.4  Operation and maintenance of
            facilities......................           1           1
    32.0  Land and structures...............          40          48
                                               ---------   ---------  ----------
    99.9    Total obligations...............          46          54
    ---------------------------------------------------------------------------

                         Research and Program Management

                   Program and Financing (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0103-0-1-999      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Change in unpaid obligations:
    72.40 Unpaid obligations, start of year:
            Obligated balance: Uninvested...          10           1
    73.20 Total outlays (gross).............          -2
    73.40 Adjustments in expired accounts...          -7          -1
    74.40 Unpaid obligations, end of year:
            Obligated balance: Uninvested...           1
    ----------------------------------------------------------------------------

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

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

        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,
    [$18,300,000] $20,000,000. (Departments of Veterans Affairs and Housing
    and Urban Development, and Independent Agencies Appropriations Act,
    1998.)

                   Program and Financing (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0109-0-1-252      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

        Obligations by program activity:
    10.00 Total obligations.................          17          18          20
    ----------------------------------------------------------------------------

        Budgetary resources available for obligation:
    22.00 New budget authority (gross)......          17          18          20
    23.95 New obligations...................         -17         -18         -20
    ----------------------------------------------------------------------------

        New budget authority (gross), detail:
    40.00 Appropriation.....................          17          18          20
    ----------------------------------------------------------------------------

        Change in unpaid obligations:
    72.40 Unpaid obligations, start of year:
            Obligated balance: Uninvested...           3           2           2
    73.10 New obligations...................          17          18          20
    73.20 Total outlays (gross).............         -17         -18         -20
    73.40 Adjustments in expired accounts...          -1
    74.40 Unpaid obligations, end of year:
            Obligated balance: Uninvested...           2           2           2
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.90 Outlays from new current authority          15          16          17
    86.93 Outlays from current balances.....           2           2           2
                                               ---------   ---------  ----------
    87.00   Total outlays (gross)...........          17          18          20
    ----------------------------------------------------------------------------

        Net budget authority and outlays:
    89.00 Budget authority..................          17          18          20
    90.00 Outlays...........................          17          18          20
    ---------------------------------------------------------------------------

        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.

                   Object Classification (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-0109-0-1-252      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------
    11.1  Personnel compensation: Full-time
            permanent.......................          12          14          16
    12.1  Civilian personnel benefits.......           3           3           3
    21.0  Travel and transportation of
            persons.........................           1           1           1
    25.2  Other services....................           1
                                               ---------   ---------  ----------
    99.9    Total obligations...............          17          18          20
    ---------------------------------------------------------------------------

                                  Personnel Summary

    ----------------------------------------------------------------------------
    Identification code 80-0109-0-1-252      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------
    1001  Total compensable workyears: Full-
            time equivalent employment......         187         198         210
    ---------------------------------------------------------------------------

                                   Trust Funds

               Science, Space, and Technology Education Trust Fund

                  Unavailable Collections (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-8978-0-7-503      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------
        Balance, start of year:
    01.99 Balance, start of year............
        Receipts:
    02.01 Earnings on investments; Science,
            Space and Technology Education,
            Trust Fund......................           1           1           1
        Appropriation:
    05.01 Science, space, and technology
            education trust fund............          -2          -1          -1
    07.99 Total balance, end of year........
    ---------------------------------------------------------------------------

                   Program and Financing (in millions of dollars)

    ----------------------------------------------------------------------------
    Identification code 80-8978-0-7-503      1997 actual   1998 est.   1999 est.
    ----------------------------------------------------------------------------

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

        Budgetary resources available for obligation:
          Unobligated balance available, start of year:

            U.S. Securities:
    21.41     Par value.....................          16          16          17
    21.42     Unrealized discounts..........                                   1
                                               ---------   ---------  ----------
    21.99     Total unobligated balance,
                start of year...............          16          16          18
    22.00 New budget authority (gross)......           2           1           1
                                               ---------   ---------  ----------
    23.90   Total budgetary resources
              available for obligation......          18          17          19
    23.95 New obligations...................          -1
          Unobligated balance available, end of year:

            U.S. Securities:
    24.41     Par value.....................          16          17          17
    24.42     Unrealized discounts..........                       1           1
                                               ---------   ---------  ----------
    24.99   Total unobligated balance, end
              of year.......................          16          18          18
    ----------------------------------------------------------------------------

        New budget authority (gross), detail:
    60.27 Appropriation (trust fund,
            indefinite).....................           2           1           1
    ----------------------------------------------------------------------------

    [[Page 993]]

        Change in unpaid obligations:
    73.10 New obligations...................           1
    73.20 Total outlays (gross).............          -2          -1          -1
    ----------------------------------------------------------------------------

        Outlays (gross), detail:
    86.97 Outlays from new permanent
            authority.......................           2           1           1
    ----------------------------------------------------------------------------

        Net budget authority and outlays:
    89.00 Budget authority..................           2           1           1
    90.00 Outlays...........................           2           1           1
    ---------------------------------------------------------------------------

                            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 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, [2000] 2001.
         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, [1998] 1999
    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.
        [Of the funds provided to the National Aeronautics and Space
    Administration in this Act, the Administrator shall by November 1, 1998,
    make available no less than $400,000 for a study by the National
    Research Council, with an interim report to be completed by June 1,
    1998, that evaluates, in terms of the potential impact on the Space
    Station's assembly schedule, budget, and capabilities, the engineering
    challenges posed by extravehicular activity (EVA) requirements, United
    States and non-United States space launch requirements, the potential
    need to upgrade or replace equipment and components after assembly
    complete, and the requirement to decommission and disassemble the
    facility.]
        NASA shall develop a revised appropriation structure for submission
    in the Fiscal Year 2000 budget request consisting of two basic
    appropriations (the Human Space Flight Appropriation and the Science,
    Aeronautics and Technology Appropriation) with a separate (third)
    appropriation for the Office of the Inspector General. The
    appropriations shall each include the planned full costs (direct and
    indirect costs) of NASA's related activities and allow NASA to shift
    civil service salaries, benefits and support between and/or among
    appropriations or accounts, as required, for the safe, timely, and
    successful accomplishment of NASA missions. (Departments of Veterans
    Affairs and Housing and Urban Development, and Independent Agencies
    Appropriations Act, 1998.)