Science and technology

Associated Press
In a photo provided by NASA, the SpaceX Falcon 9 rocket, with it's Dragon spacecraft onboard, is seen shortly after it was erected at Launch Complex 40 at the Cape Canaveral Air Force Station in Florida on Friday, March 1, 2013. Launch of the second SpaceX Commercial Resupply Services mission is scheduled for later Friday morning.  (AP Photo/Nasa, Bill Ingalls)

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