Smithsonian planetary scientist Tom Watters explains how he knows the moon is shrinking
Science Spotlight
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Melting snow likely created fan deposits inside Martian craters, geologists say
Accumulations of drifting snow are the most plausible explanation for the presence of a number of puzzling alluvial fan deposits found inside large impact craters on Mars
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Smithsonian geophysicist Bruce Campbell explains his work of making a detailed radar map of the Moon
Bruce Campbell, of the Center for Earth and Planetary Studies at the Smithsonian’s National Air and Space Museum, is at the National Radio Astronomy Observatory in Green Bank, W. Va., to make a radar map of the Moon.
