This Week at NASA: Expedition 51-52 Takes Flight, Earth Day and More “On April 20, Expedition 51-52 Flight Engineer Jack Fischer of NASA and Soyuz Commander Fyodor Yurchikhin of the Russian Space Agency, Roscosmos launched to the International Space Station aboard a Soyuz spacecraft, from the Baikonur Cosmodrome in Kazakhstan. About six-hours later, the pair arrived at the orbital outpost and were greeted by station Commander Peggy Whitson of NASA […]