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 70.7-meter-tall Super Heavy booster and its 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).

Space vehicle, due to lift off from Texas, is crucial to Elon Musk’s plans to reach the moon and take humans to Mars

After setbacks in its last three flight attempts, Elon Musk’s company has a lot riding on the latest trip of its Starship prototype.