Photos: Atlas 5 rolls out for launch

SpaceX’s Falcon 9 rocket took off for its sixth flight of the year Monday from launch pad 39A in Florida, lofting an Inmarsat mobile broadband communications satellite to an orbit more than 40,000 miles above Earth.

The update comes after NASA said it and Boeing completed ground hot fire testing of a reaction control system (RCS) to better understand some of the in-flight anomalies seen during the spacecraft’s rendezvous and docking with the International Space Station.

The media briefing came after the agency formally pushed back the launch of the SpaceX Crew-9 mission to the International Space Station from mid-August to late-September.