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NASA GRAIL Satellites To Reveal Interior Of The Moon

The GRAIL satellites launch aboard a Delta II rocket.

Shea Huffman
Staff Reporter

NASA's twin satellites launched Saturday to research the formation of the moon.

NASA Launches Pair of Moon-Mapping Spacecraft

The GRAIL spacecraft will map the moon's gravity field, as depicted in this artist's rendering. Image: NASA/JPL-Caltech

Len Ly
Senior Staff Reporter

The spacecraft are expected to reach Earth's moon by New Year's Day 2012.

South Pole of the moon

NASA's Moon Research Mission Halted By Weather