These image of Mercury by NASA's Messenger probe show the distinctive color of the planet's northern plains and their surrounding terrain. The top image is as Messenger saw the scene, with the bottom ... more 
These image of Mercury by NASA's Messenger probe show the distinctive color of the planet's northern plains and their surrounding terrain. The top image is as Messenger saw the scene, with the bottom image enhanced to bring out features. less 
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SPACE.com | Photo By NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Mon, Sep 24, 2012 12:24 PM EDT