In this Tuesday. Oct. 29, 2013 photo, Mike Hopkins, a 1991 engineering graduate of the University of Illinois, greets an audience at his alma mater in Urbana, Ill., through a live video chat from the International Space Station. Hopkins had 10 minutes to answer questions from Illini aerospace engineering students at the University of Illinois National Center for Supercomputing Applications. (AP Photo/The News-Gazette, Rick Danzl)
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