SpaceX Starship launches are on hold pending an investigation into last week's test flight.

The Federal Aviation Administration (FAA) announced on Wednesday that the hour-long space flight resulted in a mishap based on the performance of the mega rocket's first-stage booster.

Minutes after Starship blasted off from Texas on Friday, the booster separated as normal, but engines conked out as it made its way back to Earth. Instead of a controlled splashdown in the Gulf of Mexico, the booster came in hard. There were no reports of injury or property damage, according to the FAA, which will oversee the company's investigation.