Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington.From Discovery Channel:
Sept. 28, 2009 -- Tomorrow, NASA's MESSENGER (MErcury Surface, Space ENvironment, GEochemistry and Ranging) spacecraft will make its third and final flyby of the Solar System's innermost planet, Mercury. After coming within 142 miles to the small planet's rocky surface, the robotic probe will be flung back into interplanetary space before arriving in Mercury orbit in 2011 for a year-long mission to study the planet in unprecedented detail.
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