Live coverage: Atlas 5 countdown and launch journal

A high-throughput communications satellite developed as a joint venture between Telesat and APT Satellite lifted off on top of a SpaceX Falcon 9 rocket at 12:45 a.m. EDT (0445 GMT) Monday from Cape Canaveral, following a delay to wait for storms to clear the Florida spaceport.

The launch of two NASA astronauts dealt with two previous scrubs due to a valve issue on the Atlas 5 rocket and then a ground system issue at the launchpad. Liftoff happened at 10:52 a.m. EDT (1452 UTC) on Wednesday, June 5.

United Launch Alliance teams at Cape Canaveral launched an Atlas 5 rocket at 6:13 a.m. EDT (1013 GMT) Thursday with the U.S. Air Force’s fifth Advanced Extremely High Frequency communications satellite. The AEHF 5 satellite will join a network of geostationary relay stations providing secure, jam-resistant video, voice and data links for the U.S. military.