Photographers track a Delta II rocket, carrying the Gravity Recovery and Interior Laboratory (GRAIL) mission lifts off from the Cape Canaveral Air Force Station in Cape Canaveral, Fla., Saturday, ... more 
Photographers track a Delta II rocket, carrying the Gravity Recovery and Interior Laboratory (GRAIL) mission lifts off from the Cape Canaveral Air Force Station in Cape Canaveral, Fla., Saturday, Sept. 10, 2011. The objective of the mission is to determine the structure of the lunar interior.(AP Photo/Terry Renna) less 
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Associated Press | Photo By Terry Renna
Sat, Sep 10, 2011 10:37 AM EDT