Elon Musk's SpaceX on Sunday called off the launch of Starship's tenth mission from Texas over an issue at its launch site, delaying an attempt to achieve several long-sought development milestones missed due to past tests ending in early failures.

The 232-foot(70.7-meter)-tall Super Heavy booster and its 171-foot(52-meter)-tall Starship upper half sat stacked on a launch mount at SpaceX's Starbase rocket facilities as it was being filled with propellant ahead of a liftoff time of 7:35 p.m. ET (2335 GMT).