SpaceX aborts Starhopper rocket prototype launch at last second

SpaceX called off the planned launch of its Starhopper rocket Monday (Aug. 26) after a last-second abort stalled the much-anticipated demonstration flight. The company hopes to try again Tuesday.

Starhopper, a squat, reusable prototype for SpaceX's planned Starship vehicle, was expected to launch 500 feet (150 meters) straight up and then make a three-point landing during Monday's test at the company's South Texas site near Boca Chica Village. But when the countdown clock reached zero just after 7 p.m. EDT (2300 GMT), Starhopper's single Raptor engine did not ignite.

SpaceX CEO Elon Musk hinted that the problem may have been the igniters on the Raptor, the company's newest rocket engine.

"Raptor uses dual redundant torch igniters. Better long-term, but more finicky in development," Musk wrote in a Twitter statement. For a time, it seemed like SpaceX may attempt a second launch try Monday evening, but the company ultimately opted for a 24-hour delay.

"Igniters need to be inspected," Musk added. "We will try again tomorrow same time."

SpaceX now aims to attempt the Starhopper launch Tuesday, Aug. 27. The area's Cameron County sheriff's department will close roads in Boca Chica neighborhoods near SpaceX's facility for several hours during Tuesday's launch attempt. SpaceX could also try on Wednesday, if needed.

Starhopper's next launch has been delayed for nearly a week as SpaceX has worked with the Federal Aviation Administration for launch approvals.

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