Specialists help NASA astronaut Christina Koch after landing of the Russian Soyuz MS-13 space capsule in a remote area southeast of Zhezkazgan in the Karaganda region of Kazakhstan, February 6, 2020. Koch, who led the first all-female spacewalk in 2019, landed in Kazakhstan after a record stay on the International Space Station, ending a 328-day mission expected to yield new insights into deep-space travel.

Sergei Ilnitsky/Pool via REUTERS 

Christina Koch smiles after a space suit check shortly before launch at the Baikonur Cosmodrome, Kazakhstan March 14, 2019. REUTERS/Shamil Zhumatov 

Photographers take pictures as the Soyuz MS-12 spacecraft carrying the crew of Aleksey Ovchinin of Russia, Nick Hague and Christina Koch of the U.S. blasts off to the International Space Station from the launchpad at the Baikonur Cosmodrome, Kazakhstan March 15, 2019. REUTERS/Shamil Zhumatov 

Christina Koch reacts on a bus before leaving for pre-flight preparation at the Baikonur Cosmodrome, Kazakhstan March 14, 2019. REUTERS/Shamil Zhumatov