Live coverage: Atlas 5 countdown and launch journal

Watch a video replay of NASA’s Parker Solar Probe lifting off from Cape Canaveral Air Force Station’s Launch Complex 37 atop a United Launch Alliance Delta 4 Heavy on August 12, 2018.

United Launch Alliance kicked off its 2018 launch campaign with a Delta 4 rocket flight at 2:11 p.m. PST (5:11 p.m. EST; 2211 GMT) Friday from Vandenberg Air Force Base in California. Gusty winds forced officials to call off a launch attempt Wednesday, and technical problems halted a countdown Thursday multiple times. The Delta 4 launched with a top secret spy satellite for the National Reconnaissance Office.

Rocket Lab’s second launch in a little more than a week blasted off from New Zealand at 5:14 a.m. EDT (0914 UTC) Friday with two commercial Earth observation satellites for BlackSky. The Electron rocket’s first stage booster successfully splashed down in the Pacific Ocean for recovery.