Live coverage: Atlas 5 countdown and launch journal

SpaceX’s Falcon 9 rocket blasted off Wednesday carrying NOAA’s Deep Space Climate Observatory, the world’s most distant weather satellite heading for a point a million miles from Earth. Launch from Cape Canaveral occurred at 6:03 p.m. EST (2303 GMT).

The most powerful variants of the Atlas 5 and Delta 4 rockets have been purchased by the Air Force to launch intelligence-gathering spacecraft for the U.S. government, and NASA has bought an Atlas 5 to deploy a critical polar-orbiting weather satellite.

SpaceX launched its first mission of the year Monday at 9:19 p.m. EST (0219 GMT Tuesday), when a Falcon 9 rocket lifted off from Cape Canaveral with SpaceX’s third batch of 60 Starlink broadband satellites.