NASA has postponed the first crewed launch of Boeing’s Starliner capsule due to an issue with a noisy valve on the rocket meant to carry it into space.
But two hours before the scheduled liftoff, a valve on the ship's Atlas V rocket began buzzing at an audible 40 hertz, forcing the flight team to halt the mission. Related: Mysterious object that crashed through Florida home was likely space junk from the International Space Station Sign up for the Live Science daily newsletter nowGet the world’s most fascinating discoveries delivered straight to your inbox.