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  • Lunar and Planetary Science and Exploration  (4)
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  • 1
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    Apollo 50 Next Giant Leap (2019)
    In:  Other Sources
    Details
    Publication Date: 2019-07-25
    Description: No abstract available
    Keywords: Lunar and Planetary Science and Exploration
    Type: MSFC-E-DAA-TN70754 , Anniversary Apollo NASA Spinoff Presentation; Jul 19, 2019; Ronks, PA; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    How Dielectric Breakdown May Contribute to the Global Weathering of Regolith on the Moon (2018)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Space weathering is an important process on airless bodies, and it must be considered when interpreting data from planetary missions. Previous work has shown that solar energetic particles may cause dielectric breakdown in regolith within permanently shadowed regions near the poles of the Moon. Here, we predict that dielectric breakdown weathering could have melted and/or vaporized 2 9% of gardened (i.e., thoroughly mixed) regolith at the equator and 5 11% near the poles. If so, then 3 10% of all gardened regolith on the Moon may have experienced dielectric breakdown, and this process must be considered when analyzing remote sensing data or soil samples returned by the Luna and Apollo missions.
    Keywords: Lunar and Planetary Science and Exploration
    Type: GSFC-E-DAA-TN62924 , Icarus (ISSN 0019-1035); 319; 785-794
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    NASA TECHNICAL REPORTS
  • 3
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    Lunar Hydrospheric Explorer (HYDROX) (2015)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The Lunar Hydrospheric Explorer (HYDROX) is a 6U CubeSat designed to further confirm the existence of lunar exospheric water, and to determine source processes and surface sites, through ion mass spectrometer measurements of water group (O+, OH+, H2O+) and related ions at energy charge up to 2 keV/e. and mass/charge 1-40amu/e. HYDROX would follow up on the now-concluded exospheric compositional measurements by the Neutral Mass Spectrometer on the NASA LADEE mission and on other remote sensing surface and exospheric measurements (LADEE,LRO, etc.).
    Keywords: Lunar and Planetary Science and Exploration
    Type: GSFC-E-DAA-TN26187 , European Planetary Science Congress 2015; Nov 27, 2015 - Oct 02, 2015; Nantes; France
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Signatures of Volatiles in the Lunar Proton Albedo (2015)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: We find evidence for hydrated material in the lunar regolith using "albedo protons" measured with the Cosmic Ray Telescope for the Effects of Radiation (CRaTER) on the Lunar Reconnaissance Orbiter (LRO). Fluxes of these albedo protons, which are emitted from the regolith due to steady bombardment by high energy radiation (Galactic Cosmic Rays), are observed to peak near the poles, and are inconsistent with the latitude trends of heavy element enrichment (e.g., enhanced Fe abundance). The latitudinal distribution of albedo protons anti-correlates with that of epithermal or high energy neutrons. The high latitude enhancement may be due to the conversion of upward directed secondary neutrons from the lunar regolith into tertiary protons due to neutron-proton collisions in hydrated regolith that is more prevalent near the poles. The CRaTER instrument may thus provide important measurements of volatile distributions within regolith at the Moon and potentially, with similar sensors and observations, at other bodies within the Solar System.
    Keywords: Lunar and Planetary Science and Exploration
    Type: GSFC-E-DAA-TN40280 , Icarus (ISSN 0019-1035); 273; 25-35
    Format: text
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    NASA TECHNICAL REPORTS
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