Live coverage: Falcon 9 disintegrates after launch

The NROL-149 mission was the sixth and final mission of the year supporting the agency’s proliferated architecture. Liftoff from pad 4 East at Vandenberg Space Force Base happened at 5:19 a.m. PST (8:19 a.m. EST, 1319 UTC).

The launch continues SpaceX’s advancement of the rocket, which is key not only to its ambitions, but also to NASA’s Artemis program. Liftoff from Starbase is set for 7 a.m. CDT (1200 UTC), the start of a 30-minute launch window.

A United Launch Alliance Atlas 5 rocket launched at 5:02 p.m. EST (2202 GMT) Thursday from Cape Canaveral with NOAA’s GOES-S weather satellite, the second in a series of upgraded observatories destined to cover the western United States and the Pacific Ocean.