SpaceX tested its big rocket, Starship. Some parts did not work well. A door did not open, so fake satellites could not go out. The rocket spun and fell into the ocean. It broke into many pieces. The boss, Elon Musk, said they learned from it. They will try to launch rockets faster. They used an old part of the rocket, but it broke and fell into the sea. They wanted to test the rocket's heat shield, but they could not. NASA wants to use Starship to send people to the moon.