Video: Last minute technical problem scrubs Falcon 9 launch

The NROL-57 mission was the eighth launch supporting the National Reconnaissance Office’s proliferated architecture satellite constellation. Liftoff happened at 11:49 p.m. PDT (2:49 a.m. EDT, 0649 UTC).

Nearly four weeks after its arrival at the International Space Station, a SpaceX Dragon supply ship departed the research lab Saturday and dropped out of orbit for a parachute-assisted splashdown in the Pacific Ocean southwest of Los Angeles. The Dragon capsule was released from the station’s robotic arm at 4:58 a.m. EST (0958 GMT), and splashdown occurred at approximately 10:36 a.m. EST (1536 GMT).

Two cosmonauts living aboard the International Space Station plugged a small hole in the hull of a Soyuz ferry craft with a wipe and sealant Thursday, stabilizing the air pressure inside the orbiting research outpost after engineers detected a minor leak.