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  • 1
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    The interplanetary and near-Jupiter meteoroid environments (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The meteoroid penetration detectors on the Pioneer 10 spacecraft recorded 67 meteoroid penetrations through the 25-micron stainless steel test material while the spacecraft was between 1.0 and 5.1 AU. Ten of these penetrations occurred during the encounter with Jupiter. The cumulative spatial density of meteoroids with masses greater than 2 nanograms has been calculated from these data for interplanetary space and for the near-Jupiter space. The spatial density is found to be essentially constant in interplanetary space between 1 and 5 AU, approximately 1 meteoroid per cubic km, and 1-2 orders of magnitude greater near Jupiter. There was no increase in the spatial density of meteoroids in the asteroid belt and hence no evidence that there is a significant asteroidal component of 2-nanogram meteoroids. It is uncertain whether the meteoroids detected near Jupiter were in orbit about Jupiter or were gravitationally focused toward the planet from solar orbits.
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 79; Sept. 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Interplanetary and near-Jupiter meteoroid environments - Preliminary results from the meteoroid detection experiment (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Data on interplanetary and near-Jupiter micrometer-sized particle encounters from the meteoroid-detection experiment on Pioneer 10 indicate that Jupiter is much 'dustier' than interplanetary space. Whereas the near-earth particulate flux showed very little increase over the interplanetary flux, the near-Jupiter penetration flux was over two orders of magnitude higher than the interplanetary flux.
    Keywords: SPACE SCIENCES
    Type: Science; 183; Jan. 25
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Meteoroid impacts on Mars and the secondary particle environment (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The degree to which the thin Martian atmosphere filters out meteoroids approaching the Martian surface was calculated by using a model of the meteoroid environment, a model of the Martian atmosphere, and equations of meteor physics. The secondary particle environment on the surface of Mars caused by the material ejected from meteoroid craters was modeled. The model consists of the mass distribution and the speed distribution of the secondary particles. Calculations were made of the penetration flux for aluminum structures on the Martian surface. The penetration hazard on the Martian surface was compared with the penetration hazard in space near Mars and on the lunar surface.
    Keywords: SPACE SCIENCES
    Type: NASA-TN-D-6951 , L-8479
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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