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 and other members of the crew. Fischer and Yurchikhin will spend four and a half months conducting research aboard the station. Also, U.S. Resupply Mission Heads to the Space Station, Time Magazine Recognizes Planet-Hunting Scientists, Landslides on Ceres Reflect Ice Content, Mars Rover Opportunity Leaves ‘Tribulation’, and Earth Day in the Nation’s Capital.