This undated image released by NASA and taken by the NASA Dawn spacecraft shows the south pole of the giant asteroid Vesta. After spending a year examining Vesta, Dawn was poised to depart and head to... more 
This undated image released by NASA and taken by the NASA Dawn spacecraft shows the south pole of the giant asteroid Vesta. After spending a year examining Vesta, Dawn was poised to depart and head to another asteroid Ceres, where it will arrive in 2015. (AP Photo/NASA) less 
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Associated Press | Photo By NASA
Wed, Sep 5, 2012 5:02 AM EDT