A SpaceX Starship rocket broke up in space minutes after launching from Texas on Thursday, forcing airline flights over the Gulf of Mexico to alter course to avoid falling debris and setting back Elon Musk's flagship rocket program.

The "rapid unscheduled disassembly" was likely caused by a propellant leak, Elon Musk said, and was captured on video by spectators on the ground.

SpaceX is set to launch the seventh test flight of its Starship rocket, which will include a crucial test for how it will deploy satellites.