SpaceX said its Starship space vehicle broke up during a flight meant to test the megarocket's capabilities. Videos on social media appeared to show debris streaming across the sky.

The third Starship test flight last March saw the spacecraft reach its planned trajectory and fly halfway around the world before succumbing to the scorching heat of atmospheric reentry. In June, the fourth test flight ended with controlled splashdowns of the rocket's Super Heavy booster in the Gulf of Mexico and of Starship in the Indian Ocean.