Live coverage: Atlas 5 countdown and launch journal

A replay of the United Launch Alliance Atlas 5 rocket launching the Global Positioning System 2F-12 satellite from Cape Canaveral, Florida, completing 27 years and 61 flights of the GPS 2 generation.

Mission leaders Tuesday gave approval for rollout of the United Launch Alliance Atlas 5 rocket on Wednesday morning, leading to liftoff Thursday night of the Magnetospheric Multiscale science project for NASA.

A United Launch Alliance Delta 4-Heavy rocket is awaiting liftoff with a classified U.S. government spy satellite at Vandenberg Air Force Base’s historic Space Launch Complex-6, a picturesque rocket facility that was once intended to support launches of military astronauts and space shuttles.