At 12:31 A.M. EDT October 6, NASA’s MESSENGER spacecraft will skim within 125 miles (200 kilometers) of Mercury’s surface. MESSENGER — short for MErcury Surface, Space ENvironment, GEochemistry, and ...
Little more than three weeks after MESSENGER’s first historic flyby of Mercury, the team this week began mapping out its trajectory and observation plans for the probe’s second pass of the planet this ...
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