Photos: Atlas 5 powers away with NROL-61 payload

SpaceX test-fired a Falcon 9 rocket Monday night at the Kennedy Space Center in Florida, clearing the way for a launch Thursday with Qatar’s Es’hail 2 communications satellite, the first daytime liftoff from Florida’s Space Coast in more than six months.

This video released by United Launch Alliance shows the Delta 4-Heavy rocket’s predawn liftoff Aug. 12 from the perspective of a downward-facing camera, capturing dazzling views of the fiery takeoff and the dramatic separation of the launcher’s two hydrogen-fueled boosters.

The United Launch Alliance Atlas 5 rocket, standing 189 feet tall and and weighing 720,000 pounds, unleashes 860,000 pounds of thrust from its main engine at 10:30 a.m. local time (1:30 p.m. EST; 1830 GMT) today to launch the commercial WorldView 4 Earth-imaging satellite for DigitalGlobe from Vandenberg Air Force Base, California.