Students at Drexel University view a video projection of the launch of space shuttle Atlantis commanded by alumnus Chris Ferguson on campus Friday, July 8, 2011, in Philadelphia. Atlantis is the 135th and final space shuttle launch for NASA. (AP Photo/Matt Rourke)

Associated Press
Students at Drexel University view a video projection of the launch of space shuttle Atlantis commanded by alumnus Chris Ferguson on campus Friday, July 8, 2011, in Philadelphia. Atlantis is the 135th and final space shuttle launch for NASA. (AP Photo/Matt Rourke)
Students at Drexel University view a video projection of the launch of space shuttle Atlantis commanded by alumnus Chris Ferguson on campus Friday, July 8, 2011, in Philadelphia. Atlantis is the 135th and final space shuttle launch for NASA. (AP Photo/Matt Rourke)
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