File:GRAIL-spacecraft4 cropped.jpg

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English: Technicians Get GRAIL Spacecraft Ready for Launch The Gravity Recovery And Interior Laboratory (GRAIL) mission utilizes the technique of twin spacecraft flying in formation with a known altitude above the lunar surface and known separation distance to investigate the gravity field of the moon in unprecedented detail. The technique utilizes radio links between the two spacecraft as well as radio links to stations on Earth. The mission also will answer longstanding questions about Earth's moon, including a possible inner core, and provide scientists with a better understanding of how Earth and other rocky planets in the solar system formed. GRAIL is a part of NASA's Discovery Program.
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Source http://solarsystem.nasa.gov/grail/multimediaimagedetails.cfm?Subsite_IM_ID=7466&SiteID=2
Author NASA

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current06:41, 2 July 2011Thumbnail for version as of 06:41, 2 July 20111,696 × 1,396 (2.17 MB)Pline (talk | contribs)

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