Live coverage: Kennedy Space Center to reopen Friday

The United Launch Alliance Atlas 5 rocket unleashed two million pounds of thrust at 7:19 p.m. PST (10:19 p.m. EST) on Dec. 12 to blast off from Vandenberg Air Force Base in California on the NROL-35 mission. See photos of the launch from the press viewing site.

This photo gallery shows the classified National Reconnaissance Office payload, already encapsulated in the 14-foot-diameter nose cone, being lifted atop the United Launch Alliance Atlas-Centaur rocket at Vandenberg Air Force Base for liftoff Oct. 8.

SpaceX called off a planned launch attempt Saturday to deploy the next batch of satellites for the Starlink broadband network. Two commercial Earth-observing satellites for BlackSky are also awaiting a ride into orbit on the Falcon 9 rocket from pad 39A at the Kennedy Space Center in Florida.