In this April 14, 2014 photograph provided by NASA, astronaut Rick Mastracchio works to replace a pump in a spacesuit aboard the International Space Station. Mastracchio, a University of Connecticut alumnus, delivered the school's commencement address on May 10, 2014, from aboard the International Space Station. His recorded address was shown on the video boards at Gampel Pavilion to about 5,000 people, including more than 400 graduating seniors and their families, and several members of Mastracchio's family. (AP Photo/NASA, File)
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