The 171-foot-tall (52-meter-tall) vehicle exploded on a test stand at SpaceX's Starbase site late Wednesday night (June 18) as the company was preparing to ignite its six Raptor engines in a "static fire" trial. A day later, SpaceX narrowed in on a likely cause.

All of SpaceX’s Texas operations — including the explosion during Wednesday’s engine test — take place at the company’s Starbase facility in Boca Chica, a beachside community near Brownsville. The site sits along the Gulf of America, about 20 miles from the U.S.-Mexico border.