SpaceX's Starship SN4 Prototype Explodes After Engine Test By Techtonic group SpaceX may be gearing up for its first-ever crewed mission later today, but it just can't seem to shake off its troubles with its Starship vehicles. The SN4 Starship prototype on Friday exploded in a ball of fiery inferno just after an engine test at the company's facilities in Boca Chica, Texas. According to SPadre.com , the explosion occurred about a minute after a short test of the Starship's Raptor rocket engine, but it is unclear as to what exactly went wrong. There are no reports of any casualties from the incident. SpaceX had successfully test-fired the Starship SN4 vehicle on Thursday as part of its preparations for an upcoming launch test that could have carried the rocket about 150 meters into the sky. It was the latest in a series of prototype launch vehicles built by SpaceX to test the technologies required for an actual space launch. the eventual Starship ...