United Launch Alliance will launch NASA’s Gravity Recovery and Interior Laboratory (GRAIL) mission aboard a Delta 2 rocket, NASA announced May 5.
Part of NASA's Discovery Program, GRAIL will fly twin spacecraft in tandem orbits around the moon for several months to measure its gravity field in detail. The mission also will answer questions about the moon and provide scientists a better understanding of how the Earth and other rocky planets in the solar system formed.
The launch will take place at Cape Canaveral Air Force Station, Fla., in the third quarter of 2011.

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