
Two prototypes of SpaceX's giant new rocket just passed a key test.
SpaceX loaded propellant into Booster 9 and Booster 10, two "Super Heavy" first stages of its huge new Starship deep-space vehicle. Booster 9 was fueled on the orbital launch mount at the company's Starbase site in South Texas, whereas the Booster 10 test occurred at the nearby Massey's Test Facility.