Photos: Atlas 5 on the pad awaiting liftoff on NROL-52

Watch a replay of the launch of an Atlas 5 rocket carrying the $1.2 billion SBIRS GEO Flight 4 satellite into orbit.

NASA’s new communications satellite, launched to a preliminary orbit August 18, has ascended to geosynchronous altitude more than 22,000 miles up, deployed its giant antennas and extended twin solar arrays to begin in-space commissioning.

A replay of the United Launch Alliance Atlas 5 rocket launching the Air Force’s GPS 2F-10 navigation spacecraft from Cape Canaveral, Florida.