WASHINGTON (July 16): SpaceX's Starship rocket triggered a last-second abort before liftoff for its 13th flight test from Texas on Thursday as some of its 33 engines failed to start, with CEO Elon Musk saying it will likely try to launch again early next week.

Shares of SpaceX, which went public last month, fell about 3% in aftermarket trading following the scrubbed launch. The stock ended at US$131.11 on Thursday, closing below its IPO price of US$135 for the first time since listing.

"Some of the engines didn't start, triggering an automatic launch abort," Musk said in a post on X, without disclosing the number of engines on the Super Heavy rocket that did not start. "To be confident of a good flight, 2 Raptors will be removed & replaced. Most probable launch timing is early next week."

The launch abort came less than a second before Starship's planned liftoff from Starbase, SpaceX's company town in south Texas, at 5:45pm CT (2245 GMT). The rocket's engines ignited but cut off shortly after.

"We did trigger a hold on the booster that aborted our liftoff as we were starting to light those Raptor engines," said SpaceX spokesperson Dan Huot, speaking on the company's live stream after the launch was scrubbed.

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