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    X-ray Pulsar Navigation Algorithms and Testbed for SEXTANT

    L. M. B. Winternitz / M. A. Hasouneh / K. C. Grendreau et al. | NTIS | 2015
    Keywords: Astronomy & Celestial Mechanics

    X-Ray Polarimetry of Astronomical Sources: Introducing a NASA Mission with a New Window on the X-Ray Universe

    M. C. Weisskopf | NTIS | 2017
    Keywords: Astronomy

    X-Ray Computed Tomography of Tranquility Base Moon Rock

    J. S. Jones / J. Garvin / M. Viens et al. | NTIS | 2016
    Keywords: Astronomy & Astrophysics

    X-ray astronomy experiments from sounding rockets

    Rappaport, Saul | NTRS | 1987
    Keywords: Astronomy

    X-Ray Astronomy Experiments from Sounding Rockets

    S. Rappaport | NTIS | 1987
    Keywords: X ray astronomy

    X-Ray Astronomy at Marshall Space Flight Center: Chandra, IXPE, Lynx

    M. C. Weisskopf | NTIS | 2018
    Keywords: Astronomy & Celestial Mechanics , X ray astronomy

    Workshop on Using In Situ Resources for Construction of Planetary Outposts

    NTIS | 1998
    Keywords: Astronomy & Astrophysics

    Working Group for Planetary System Nomenclature

    NTIS | 1993
    Keywords: Astronomy & Celestial Mechanics

    When the Sky Falls: Performing Initial Assessments of Bright Atmospheric Events

    B. Cooke / P. Brown / R. Blaauw et al. | NTIS | 2015
    Keywords: Astronomy & Celestial Mechanics

    When Earth Songs Filled the Void of Space

    D. L. Gallagher | NTIS | 2016
    Keywords: Astronomy & Astrophysics , Astronomy

    When Biospheres Collide: A History of NASA's Planetary Protection Programs. Hard Cover

    M. Meltzer | NTIS | 2011
    Keywords: Astronomy & Astrophysics

    What Do Impact Melt Rocks from the Nectaris Basin Look Like, and Where Can We Find Them?

    Cohen B. A. | NTIS | 2015
    Keywords: Astronomy & Astrophysics

    Water-Rich Mars Surface Mission Scenario

    S. J. Hoffman / A. Andrews / B. K. Joosten et al. | NTIS | 2017
    Keywords: Astronomy & Astrophysics

    Voyages to Saturn

    D. Morrison | NTIS | 1982
    Keywords: Spaceborne astronomy

    Voyager Neptune Travel Guide

    C. Kohlhase | NTIS | 1989
    Keywords: Spaceborne astronomy

    Voyager at Neptune: 1989

    NTIS | 1989
    Keywords: Astronomy & Celestial Mechanics

    Volatiles in High Titanium Basalts from the Moon

    J. J. Barnes / F. M. McCubbin / J. W. Boyce et al. | NTIS | 2017
    Keywords: Astronomy & Astrophysics

    Vision for Ice Giant Exploration

    M. Hofstadter / A. Simon / M. Showalter et al. | NTIS | 2017
    Keywords: Astronomy & Astrophysics

    Vertical Lunar Regolith Conveying as a Flight Experiment in Simulated Lunar-Gravity

    J. Mantovani / A. Olson / B. Kemmerer et al. | NTIS | 2023
    Keywords: Astronomy & Astrophysics

    Venus Global Reference Atmospheric Model Status and Planned Updates

    H. L. Justh / A. M. Dwyer Cianciolo | NTIS | 2017
    Keywords: Astronomy & Astrophysics

    Venus Atmospheric Exploration by Solar Aircraft

    G. A. Landis / C. LaMarre / A. Colozza | NTIS | 2002
    Keywords: Astronomy & Astrophysics

    Venus Atmosphere Experimental Simulation Performance of the Glenn Extreme Environment Rig

    J. Balcerski / T. Kremic / I. Chi | NTIS | 2024
    Keywords: Astronomy & Astrophysics

    Venus Atmosphere Experimental Simulation Performance of the Glenn Extreme Environment Rig

    J. A. Balcerski / T. Kremic / I. S. Chi | NTIS | 2024
    Keywords: Astronomy & Astrophysics

    Venus Aerobot Multisonde Mission

    J. A. Cutts / V. Kerzhanovich / J. B. Balaram et al. | NTIS | 1999
    Keywords: Astronomy & Astrophysics

    Venera-D: Technology Implications

    T. Kremic | NTIS | 2016
    Keywords: Astronomy & Astrophysics

    Velocity and Density Distribution of Earth-Intersecting Meteoroids: Implications for Environment Models

    A. Moorhead / B. Cooke / P. Brown et al. | NTIS | 2017
    Keywords: Astronomy & Astrophysics

    Using Microwaves to Heat Lunar Soil

    E. C. Ethridge | NTIS | 2011
    Keywords: Astronomy & Astrophysics

    Uranus Flagship-class Orbiter and Probe Using Aerocapture

    S. Dutta / E. Shellabarger / J. B. Scoggins et al. | NTIS | 2023
    Keywords: Astronomy & Astrophysics

    Update on the Effectiveness of Postmission Disposal in LEO

    C.J Liou / P Krisko | NTIS | 2013
    Keywords: Astronomy & Astrophysics

    Unorthodoxies and Controversies in Planetary and Space Science

    H. Strughold | NTIS | 1968
    Keywords: Astronomy & Celestial Mechanics

    United States and Western Europe Cooperation in Planetary Exploration

    NTIS | 1986
    Keywords: Astronomy & Astrophysics

    United Kingdom Report on Space Research, 1977-1978

    NTIS | 1978
    Keywords: Astronomy

    Unique Science From the Moon in the Artemis Era: Drivers for Artemis Systems Requirements

    R. Weber / N. White | NTIS | 2022
    Keywords: Astronomy & Astrophysics

    Understanding the Sun-Earth Libration Point Orbit Formation Flying Challenges For WFIRST and Starshade

    C. M. Webster / D. C. Folta | NTIS | 2017
    Keywords: Astronomy & Celestial Mechanics

    Understanding the Impact of High-Velocity Dust Due to Lunar Landings

    M. Wittal / D. Fontes / B. Vu et al. | NTIS | 2020
    Keywords: Astronomy & Astrophysics

    Ultraviolet Imaging Telescope Research Activities

    Bohlin, Ralph | NTRS | 1999
    Keywords: Astronomy

    UK5: A Spacecraft for Experiments in X-Ray Astronomy

    E. C. Semple | NTIS | 1971
    Keywords: X ray astronomy

    Turning Dust to Gold: Building a Future on the Moon

    H. Thronson / H. Benaroya | NTIS | 2012
    Keywords: Astronomy & Astrophysics

    Traverse Planning Experiments for Future Planetary Surface Exploration

    S. J. Hoffman / S. A. Voels / R. P. Mueller et al. | NTIS | 2012
    Keywords: Astronomy & Astrophysics

    Transport and Use of a Centaur Second Stage in Space

    J. M. Strong / B. Morgowicz / E. Drucker et al. | NTIS | 2010
    Keywords: Astronomy & Astrophysics

    Transfer Trajectory Options for Servicing Sun-Earth-Moon Libration Point Missions

    D. C. Folta / C. Webster | NTIS | 2019
    Keywords: Astronomy & Astrophysics

    Trajectory Determinations and Collection of Micrometeoroids on the Space Station. Report of the Workshop on Micrometeorite Capture Experiments

    F. Hoerz | NTIS | 1986
    Keywords: Astronomy & Celestial Mechanics

    Training Early Career Scientists in Flight Instrument Design Through Experiential Learning: NASA Goddard's Planetary Science Winter School

    L. V. Bleacher / B. Lakew / J. Bracken et al. | NTIS | 2017
    Keywords: Astronomy & Astrophysics

    Tracking of Missiles and Space Vehicles: Compilation of Abstracts

    NTIS | 1964
    Keywords: RADIO ASTRONOMY

    Tracking of Missiles and Space Vehicles. Compilation of Abstracts

    NTIS | 1965
    Keywords: Radio astronomy

    Tracking of Missiles and Space Vehicles

    NTIS | 1965
    Keywords: Radio astronomy

    Tracking and Characterization of Resident Space Objects (RSO) Using COTS Star Trackers

    D. Watts / P. Harrison | NTIS | 2020
    Keywords: Astronomy & Celestial Mechanics

    Towing Asteroids with Gravity Tractors Enhanced by Tethers and Solar Sails

    H. Shen / C. M. Roithmayr | NTIS | 2015
    Keywords: Astronomy & Astrophysics

    Toward Large-Area Sub-Arcsecond X-Ray Telescopes

    S. ODell / T. Aldcroft / M. Graham et al. | NTIS | 2014
    Keywords: Astronomy & Celestial Mechanics , X ray astronomy

    Toward a Space based Gravitational Wave Observatory

    Stebbins R. T. | NTIS | 2015
    Keywords: Astronomy & Celestial Mechanics , Spaceborne astronomy

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