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  • Other Sources  (6)
  • LUNAR AND PLANETARY EXPLORATION
  • 1970-1974  (6)
  • 1972  (6)
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  • Other Sources  (6)
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  • 1970-1974  (6)
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  • 1
    facet.materialart.
    Unknown
    In:  Other Sources
    Publication Date: 2019-06-28
    Description: This film shows the landing and the three lunar traverses in the highland region of the moon, near the crater descartes. It includes an astronaut's eye view from the rover, lunar grand prix, discovery of the house-sized rock, lunar lift-off and eva 173,000 miles above the earth. Microphones and cameras in mission control record the emergency problem solving during the prelanding crisis and the reactions of scientists on earth as the astronauts explore the moon.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-110104 , NONP-NASA-VT-95-33955
    Format: text
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  • 2
    Publication Date: 2019-06-27
    Description: A particle by particle binocular microscopic examination of all of the Apollo 15 4-10 mm fines samples is reported. These particles are classified according to their macroscopic lithologic features in order to provide a basis for sample allocations and future study. The relatively large size of these particles renders them too vaulable to permit treatment along with the other bulk fines, yet they are too small (and numerous) to practically receive full individual descriptive treatment as given the larger rock samples. This examination, classification and description of subgroups represents a compromise treatment. In most cases and for many types of investigation the individual particles should be large enough to permit the application of more than one type of analysis.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CR-149344 , MSC-03228
    Format: application/pdf
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  • 3
    Publication Date: 2019-06-27
    Description: An in-flight visibility test conducted on the Apollo 14 mission is discussed. The need for obtaining experimental data on lunar feature visibility arose from visibility problems associated with various aspects of the Apollo missions; and especially from anticipated difficulties of recognizing lunar surface features at the time of descent and landing under certain illumination conditions. Although visibility problems have influenced many other aspects of the Apollo mission, they have been particularly important for descent operations, due to the criticality of this mission phase and the crew's guidance and control role for landing site recognition and touchdown point selection. A series of analytical and photographic studies were conducted during the Apollo program (prior to as well as after the initial manned lunar operations) to delineate constraints imposed on landing operations by visibility limitations. The purpose of the visibility test conducted on Apollo 14 was to obtain data to reduce uncertainties and to extend the analytical models of visibility in the lunar environment.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CR-141651 , TRW-20029-6018-RU-00
    Format: application/pdf
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  • 4
    Publication Date: 2019-06-27
    Description: Solutions are given for the diffusion of trapped particles in a planetary magnetic field in which the first and second adiabatic invariants are preserved but the third is not, using as boundary conditions a fixed density at the outer boundary (the magnetopause) and a zero density at an inner boundary (the planetary surface). Losses to an orbiting natural satellite are included and an approximate evaluation is made of the effects of the synchrotron radiation on the energy of relativistic electrons. Choosing parameters appropriate to Jupiter, the electrons required to produce the observed synchrotron radiation are explained. If a speculative mechanism in which the diffusion is driven by ionospheric wind is the true explanation of the electrons producing the synchrotron emission it can be concluded that Jupiter's inner magnetosphere is occupied by an energetic proton flux that would be a serious hazard to spacecraft.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CR-141967
    Format: application/pdf
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  • 5
    Publication Date: 2019-06-27
    Description: The Apollo 17 mission is discussed and illustrated. Lunar surface and orbital experiments are briefly described, and results are outlined.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-EP-101
    Format: application/pdf
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  • 6
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    Unknown
    In:  Other Sources
    Publication Date: 2019-06-27
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-79498 , MSC-03210
    Format: text
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