Photos: Atlas 5 rocket aims for International Space Station

Two U.S. astronauts flanked a veteran Russian cosmonaut Thursday for a ride back to Earth from the International Space Station. The trio undocked from the station in their Soyuz spacecraft at 0757 GMT (3:57 a.m. EDT), beginning a return flight that culminated in a parachute-assisted landing on the steppe of Kazakhstan at 1145 GMT (7:45 a.m. EDT).

A Chinese Long March 7A rocket failed to place a secret payload into orbit Monday, casting doubt on planned flights by the country’s other launchers that use similar engines.

Mission managers will be closely monitoring the weather for the first launch of astronauts aboard SpaceX’s Crew Dragon spacecraft, not just around the Kennedy Space Center, but along a corridor stretching thousands of miles across the Atlantic Ocean in case the crew capsule has to escape from its Falcon 9 rocket during the climb into orbit.