File-In this Saturday, March 9, 2013, file photo, SpaceX CEO Elon Musk gives the opening keynote at the SXSW Interactive in Austin, Texas. Musk is set to unveil a new spacecraft designed to carry astronauts on Thursday, May 29, 2014, in Hawthorne, Calif. SpaceX is one of several private companies vying to develop a manned craft to replace NASA’s retired space shuttle fleet. (AP Photo/Jack Plunkett, File)
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