American Geophysical Union

Local model better describes lunar gravity

Two satellites orbiting the Moon as a part of NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission have been mapping its inner structure by measuring subtle shifts in the pull of gravity on the satellites from ...

dateAug 27, 2014 in Space Exploration
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Why 'singing' sand dunes hum certain notes

What does Elvis Presley have in common with a sand dune? No, it's not that people sometimes spot both in the vicinity of Las Vegas. Instead, some sand dunes, like The King, can sing. And new research looking for clues to ...

dateOct 25, 2012 in Space Exploration
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