November 3, 2017 - NASA astronaut Jack Fischer speaks about his time onboard the International Space Station (ISS) during Expeditions 51/52 at Smithsonian's National Air and Space Museum in Washington. During Expedition 52, Fischer completed hundreds of scientific experiments and two spacewalks, and concluded his 136-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in September 2017. (NASA photo by Aubrey Gemignani)

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