Lunar probes to resolve mystery of moon's interior
http://www.newsdaily.com/stories/tre7bt0wu-us-space-moon/
CAPE CANAVERAL, Florida, Dec. 30, 2011 (Reuters) — Two robotic NASA probes are due to arrive at the moon this weekend to resolve a long-standing mystery of what is inside Earth's natural satellite and how it got there. One long-standing puzzle is why the far side of the moon is so different from the side that permanently faces Earth. The near side is filled with large, dark plains formed by ancient volcanic eruptions but the far side is virtually all highlands.http://www.newsdaily.com/stories/tre7bt0wu-us-space-moon/
"It seems that the answer is not on the surface," Zuber said. "We think the answer is locked in the interior."
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