Watch the Falcon 9 launch from pad 39A

Debris from SpaceX’s Falcon 9 rocket booster returned to shore in Southern California late Monday after it tipped over on touchdown on a landing platform in the Pacific Ocean following liftoff with a ocean study satellite.

A Falcon 9 rocket is lifted into position for a planned countdown dress rehearsal at launch pad 39A at the Kennedy Space Center. The rocket is being readied for launch early Sunday with the EchoStar 23 communications satellite.

Investigators probing the Sept. 1 explosion of a SpaceX Falcon 9 rocket on its launch pad in Florida believe a high-pressure gas tank inside the launcher’s upper stage most likely burst due to the conditions of the helium loaded into it, a finding that could simplify fixes needed before the commercial booster can return to service.