SpaceX Scraps First Launch of Giant Rocket in Texas.

SpaceX postponed the first launch attempt of its giant Starship rocket due to a stuck valve needed to pressurize the first-stage booster. The test flight was called off with just over eight minutes left in the countdown. No people or satellites were aboard. The company plans to use Starship to send people and cargo to the moon and, ultimately, Mars. The next launch attempt will be at least on Thursday.