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Lunar Prospector: overview

A B Binder1

  • 1Lunar Research Institute, 1180 Sunrise Drive, Gilroy, CA 95020, USA. abinder@mail.arc.nasa.gov

Science (New York, N.Y.)
|September 4, 1998
PubMed
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Lunar Prospector

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Area of Science:

  • Lunar Science
  • Planetary Geology
  • Geophysics

Background:

  • Lunar Prospector spacecraft in polar orbit since January 1998.
  • Global mapping of lunar composition, gravity, and magnetic fields.

Purpose of the Study:

  • Map lunar composition globally.
  • Analyze lunar gravity and magnetic fields.
  • Investigate presence of water ice and elemental distribution.

Main Methods:

  • Utilized neutron flux data for hydrogen detection.
  • Employed gamma-ray and neutron spectroscopy for elemental analysis.
  • Conducted magnetic and gravity field mapping from polar orbit.

Main Results:

  • Confirmed abundant hydrogen, suggesting significant water ice in polar regions.

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  • Mapped global distribution of elements like Fe, Ti, KREEP, and major rock types.
  • Identified strong magnetic fields antipodal to major maria and the smallest solar system magnetosphere.
  • Delineated seven new gravity anomalies and a small, iron-rich lunar core (300 km radius).

    • Conclusions:

    • Lunar Prospector provides comprehensive global data on lunar composition and fields.
    • Findings indicate substantial water ice resources and detailed insights into lunar geology and internal structure.