This artist's concept depicts a cometlike tail of a possible disintegrating super Mercury-size planet candidate as it transits, or crosses, its parent star, named KIC 12557548. At an orbital distance ... more 
This artist's concept depicts a cometlike tail of a possible disintegrating super Mercury-size planet candidate as it transits, or crosses, its parent star, named KIC 12557548. At an orbital distance of only twice the diameter of its star, the less 
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SPACE.com | Photo By NASA/JPL-Caltech
Wed, Sep 5, 2012 11:48 AM EDT