SpaceX's Crew-10 mission is set to send four astronauts to the International Space Station, paving the way for NASA astronaut Sunita Williams' return to Earth after over eight months in space.

SpaceX said the rocket experienced a “rapid unscheduled disassembly” during its ascent burn—the same result as its previous test flight.

Space companies need Starship's super-heavy heft to fly human habitats and mining equipment to the moon. The rocket just suffered a major setback.