This artist's conception of a planetary smashup whose debris was spotted by NASA's Spitzer Space Telescope in 2009 gives an impression of the carnage that would have been wrecked when a similar impact... more 
This artist's conception of a planetary smashup whose debris was spotted by NASA's Spitzer Space Telescope in 2009 gives an impression of the carnage that would have been wrecked when a similar impact created Earth's moon. Image released Oct. 1 less 
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SPACE.com | Photo By NASA/JPL-Caltech
Mon, Sep 23, 2013 8:12 AM EDT