NASA astronaut Randy Bresnik, second from right, and ESA astronaut Paolo Nespoli, right, are introduced by STEM in 30's Marty Kelsey before speaking about their time onboard the International Space Station during expeditions 52/53, Thursday, May 10, 2018 at the Smithsonian National Air and Space Museum in Washington. Photo Credit: (NASA/Aubrey Gemignani)
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