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  • Humans
  • Lunar and Planetary Science and Exploration
  • 1970-1974  (3)
  • 1
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    The Nakhon Pathom Meteorite (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: No abstract available
    Keywords: Lunar and Planetary Science and Exploration
    Type: Its Mineral Sci. Invest., 1969-1971; p 69-74
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Scientific Rationale Summaries for Apollo Candidate Lunar Exploration Landing Sites - Case 340 (1970)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: A summary of the scientific rationale for each Apollo landing site listed by the Group for Lunar Exploration Planning on February 7, 1970 is presented. These sites include the Fra Mauro Formation, Littrow, Censorinus, Davy crater chain, Marius Hills, Descartes, Tycho, Copernicus central peaks, and Hadley-Apennines. In addition, a summary of the scientific rationale for Flamsteed P, the Apollo 13 backup site, and Hyginus is presented.
    Keywords: Lunar and Planetary Science and Exploration
    Type: NASA-CR-109867 , B70-03034 , HQ-E-DAA-TN57955
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Solid State Studies of the Radiation Histosy of Lunar Samples (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-08-24
    Description: Particle track densities up to greater than 3 x 10(exp 9) per square centimeter have been measured in different samples. Rocks 17, 47, 57, and 58 have VH (Z greater than 22) galactic cosmic ray ages of 11, 14, 28, and 13 x 10(exp 6) years, respectively. Rock 57 has a calculated erosion rate of approximately less than 10(exp -7) centimeter per year. Near-surface track versus depth data in rock 17 can be fit with solar flare particles that have a differential energy spectrum alpha E(exp -s); lunar samples can be used to study the history of solar activity. The uranium in the crystalline rocks occurs principally in small regions less than 10 to approximately equal to 100 micrometers in size. The (low) thermoluminescence of the fines increases with depth in core 10004. With one possible exception, x-ray studies have not shown pronounced radiation damage effects. The total energy release upon heating is small up to 900 C and occurs in three broad regions.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Science; 167; 3918; 563-566
    Format: text
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    NASA TECHNICAL REPORTS
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