Private rocket returns to Earth

Associated Press
In this photo made available by NASA, the SpaceX Dragon commercial cargo spacecraft approaches the International Space Station on Thursday, May 24, 2012 for a series of tests to clear it for its final rendezvous and grapple on Friday, May 25, 2012. (AP Photo/NASA)

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The SpaceX Dragon supply ship returned to Earth on May 31, ending its revolutionary nine-day voyage to the International Space Station with an old-fashioned splashdown in the Pacific.

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