Astronaut Shane Kimbrough at Air and Space Museum

NASA astronaut Shane Kimbrough participates in a live broadcast on Periscope about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough participates in a live broadcast on Periscope about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

DCExpedition 49Expedition 50PeriscopeShane KimbroughSmithsonian National Air and Space Museum NASM USAWashington