Live coverage: 400th Proton rocket takes off with Russian satellite

A United Launch Alliance Atlas 5 rocket blasted off from Vandenberg Air Force Base in California at 5:49 a.m. local time (8:49 a.m. EDT; 1249 GMT) Thursday on the classified National Reconnaissance Office NROL-55 mission.

A three-man space station crew returned to Earth inside a Russian Soyuz capsule, making a parachute-assisted landing on the remote plains of Kazakhstan after 165 days in orbit.

A Falcon 9 rocket is being readied for a space station resupply mission at Kennedy Space Center’s launch pad 39A . The rocket is scheduled to launch at 10:01 a.m. EST (1501 GMT) on Saturday, weather permitting. Watch live coverage.