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GRAIL Webcast: Twin Spacecraft Bound for the Moon

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Uploaded on Sep 7, 2011

The moon has captivated humanity's collective imagination for hundreds of years, but despite study with telescopes, astronauts and robotic probes, our nearest neighbor remains a mystery. NASA's Gravity Recovery and Interior Laboratory mission (GRAIL) features twin spacecraft setting off on a challenging mission to map the moon's gravity. What they learn could teach us more about the moon's past -- and how the inner solar system's rocky planets developed.

If a recognizable person appears in this video, use for commercial purposes may infringe a right of privacy or publicity. It may not be used to state or imply the endorsement by NASA employees of a commercial product, process or service, or used in any other manner that might mislead. Accordingly, it is requested that if this video is used in advertising and other commercial promotion, layout and copy be submitted to NASA prior to release.

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