SpaceX has launched another of its mammoth Starship rockets on a test flight. The 403-foot Starship thundered into the evening sky Monday from Texas. The booster is programmed to peel away and drop into the Gulf of Mexico, with the spacecraft skimming space before descending into the Indian Ocean. It’s similar to the previous test flight in August, which scored a success following a string of explosive failures. SpaceX’s Elon Musk intends to use Starship to send people to Mars. NASA cannot land astronauts on the moon by decade’s end without Starship.