Engineers completed a final test of Starship's propulsion system with a so-called "spin prime" test Wednesday at the launch site in South Texas. Ground crews then rolled the ship back to a nearby hangar for engine inspections, touchups to its heat shield, and a handful of other chores to ready it for liftoff.

SpaceX has had a tough year with its Starship program, but the Federal Aviation Administration has cleared the path for the next-generation rocket’s 10th suborbital launch attempt as early