Photos: Delta 4 lights up the sky for night owl launch

The United Launch Alliance Atlas 5 rocket that will boost NASA’s latest communications relay satellite into space is targeting an Aug. 20 liftoff at 7:56 a.m. EDT (1156 GMT).

United Launch Alliance teams ran through an 11-hour countdown Friday at Cape Canaveral to rehearse procedures before the first flight of a modified Atlas 5 rocket with Boeing’s Starliner crew capsule Dec. 20.

SpaceX launched 60 more Starlink satellites from the Kennedy Space Center at 7:29 a.m. EDT (1129 GMT) Tuesday aboard a Falcon 9 rocket. Meanwhile, the launch of another SpaceX rocket a few miles away with a GPS satellite has been postponed indefinitely after a countdown abort moments before liftoff Friday night.