On this particular test flight, as Starship positioned itself for atmospheric re-entry, one of its 13 engines failed to ignite. Shortly after, a booster appeared to explode, leading to a complete loss of control. The rocket ultimately broke apart over the Indian Ocean, which tonnes of debris will now call home.

SpaceX’s Starship spacecraft exploded ahead of an engine test late Wednesday, sending a large fireball into the South Texas sky and dealing another major setback to Elon Musk’s company. It was the fourth time the company has lost a Starship spacecraft this year. In three previous test flights, the vehicle came apart or detonated during its flight.