Tech SpaceX CEO Elon Musk says ‘frozen valve’ caused Starship’s launch to be scrubbed April 17, 2023 Damien Henderson, Associated Press Comments Off on SpaceX CEO Elon Musk says ‘frozen valve’ caused Starship’s launch to be scrubbed A frozen pressurant valve caused Starship's launch to be scrubbed, according to SpaceX CEO Elon Musk.