SpaceX's Starship splashed down in the Indian Ocean about an hour after launch. A camera on buoy captured the fireworks.

SpaceX's eighth test flight of its Starship rocket ended in a late-stage explosion Thursday night, leaving a barrage of blazing shrapnel visible in the skies that disrupted air traffic.

The reason for the investigation — and the reasoning behind the U.S. government’s grounding of SpaceX’s Starship — is concerns that the explosion of the rocket led to potentially hazardous ...