Craters
GRAIL reveals a battered lunar history
December 5, 2012
Twin spacecraft create a highly detailed gravity map of the moon, finding an interior pulverized by early impacts.
Also labeled: Astronomy, Evolution, geophysics, GRAIL, Moon, Physics, Planetary science, Solar system, Space, astronomy and planetary science, Gravity, Faculty, NASA, Research, Space exploration
Scientists discover water ice on Mercury
November 29, 2012
Ice and organic material may have been carried to the planet by passing comets.
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