Enlarge / In early June, the rocket for SpaceX's fourth full-scale Starship test flight awaits liftoff from Starbase, the company's private launch base in South Texas. (credit: SpaceX) In a short video released Thursday, possibly to celebrate the US Fourth of July holiday with the biggest rocket's red glare of them all, SpaceX provided new footage of the most recent test of its Starship launch vehicle. This test, the fourth of the experimental rocket that NASA is counting on to land its astronauts on the Moon, and which one day may launch humans to Mars, took place on June 6.