NASA Probes Prepare for Mission-Ending Moon Impact
December 13, 2012
PASADENA, Calif. -- Twin lunar-orbiting NASA spacecraft that have allowed scientists to learn more about the internal structure and composition of the moon are being prepared for their controlled descent and impact on a mountain near the moon's north pole at about 2:28 p.m. PST (5:28 p.m. EST) Monday, Dec. 17.
Ebb and Flow, the Gravity Recovery and Interior Laboratory (GRAIL) mission probes, are being sent purposely into the lunar surface because their low orbit and low fuel levels preclude further scientific operations. The duo's successful prime and extended science missions generated the highest-resolution gravity field map of any celestial body. The map will provide a better understanding of how Earth and other rocky planets in the solar system formed and evolved.
More - Link >>> http://www.jpl.nasa.gov/news/news.php?release=2012-396&cid=release_2012-396
Sources: Jet Propulsion Laboratory, NASA.
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