Thomas R. Watters is a senior scientist at the Center for Earth and Planetary Studies at the Smithsonian National Air and Space Museum in Washington, D.C.
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Imagining A More Active Moon
New research says that our moon may be more geologically active than once thought.
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New Views of the Moon
New images of the moon’s surface taken from the Lunar Reconnaissance Orbiter Camera show fault lines with a surprising explanation: The moon may be shrinking.