A SpaceX Starship rocket exploded on a test stand in Texas, adding to a series of setbacks to Elon Musk’s space ambitions that include trips to Mars.

SpaceX is still looking into what happened on Flight 9, an investigation overseen by the U.S. Federal Aviation Administration. So there was not yet an official target launch date for Starship Flight 10 — and, if there had been, it would now have to be revised after the events of Wednesday night.