Stats: Atlas 5 history and backlog

A rocket engine with a long pedigree marked a big milestone on Monday. It’s 60 years since the hydrogen-fueled RL10 engine debuted onboard a Centaur upper stage launched from Cape Canaveral on Nov. 27, 1963.

A photo gallery shows Thursday night’s successful Atlas 5 rocket launch from Cape Canaveral.

The 8-million-pound mobile service tower is retracted from around the Atlas 5 rocket, revealing the 189-foot-tall vehicle for liftoff from Vandenberg Air Force Base, California, carrying the commercial WorldView 4 Earth-imaging satellite.