Most importantly, SpaceX will attempt to briefly reignite one of Starship's six Raptor engines in space. SpaceX tried this on Starship's third launch in March but aborted the engine restart after the rocket lost roll control during the flight's coast phase.

SpaceX launched the sixth test flight of its Starship rocket on Tuesday, as the company looks to keep up momentum of the mammoth vehicle’s development.

SpaceX launched its sixth test of its massive Starship from South Texas on Tuesday to evaluate critical upgrades from its fifth successful test flight, as plans for another booster "catch and reuse" were scrapped.

President-elect Donald Trump flew in for the launch in the latest sign of his deepening bond with Elon Musk, SpaceX's founder and CEO. View on euronews