Live coverage: Atlas 5 blasts off with Navy satellite

Liftoff from Space Launch Complex 41 at Cape Canaveral Space Force Station occurred at 3:28 a.m. EST (0828 UTC), as the RD-180 engine on the booster roared to lift alongside five solid rocket boosters.

The planned launch of a SpaceX Falcon 9 rocket Tuesday from Cape Canaveral of a South Korean military communications satellite has been delayed in order to address an issue on the launcher’s second stage, and potentially replace the hardware if necessary, officials said Monday.

Spaceflight Now members can watch a live view of Cape Canaveral’s Complex 41 launch pad as an Atlas 5 rocket counts down to liftoff at 5:02 p.m. EST (2202 GMT) Thursday with the GOES-S weather satellite.