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GRAIL Mission Briefing
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Jim Green, director, Planetary Science Division at NASA Headquarters, speaks at a press conference about the upcoming launch to the moon of the Gravity Recovery and Interior Laboratory (GRAIL) mission, Thursday, Aug. 25, 2011 in Washington. GRAIL's primary science objectives are to determine the structure of the lunar interior, from crust to core, and to advance understanding of the thermal evolution of the moon.
NASA Image and Video Library’s own descriptionCredit lineGRAIL Mission Briefing. NASA/HQ, 2011-08-25. Public domain. ID: 201108250001HQ.
