Snapshots from Atlas 5 launch

Orbital ATK plans to launch its next two commercial resupply missions to the International Space Station on Atlas 5 rockets, grabbing a launch slot in March after a next-generation U.S. weather satellite was delayed, industry officials said.

The geostationary orbital satellite is the fourth and final in the Geostationary Operational Environmental Satellites-R (GOES-R) series. Liftoff happened at 5:26 p.m. EDT (2126 UTC).

SpaceX tested astronaut slidewire escape baskets and fire suppression capabilities Friday at launch pad 39A in Florida, demonstrating systems that would be activated in the event of an emergency before liftoff of a crewed mission.