1 month ago. A subsequent prototype, called Starship SN2, successfully passed the same pressure test on March 8. SpaceX's SN1 Starship prototype was destroyed during a pressure test on Friday (Feb. 28). SpaceX's newest prototype of its Starship Mars-colonizing vehicle just passed a crucial pressure test, potentially paving the way for more ambitious trials in the near future. level 2. Each iteration of Starship has included tweaks and improvements over its predecessor. Like I imagine if you hold it at 1.4 times the pressure for like 6 hours. I thought they had just done water tests, still waiting for the cryo test. Then you can safely assume it can hold 1.0 pressure indefinitely. But the SN2 is already under construction and being prepped for testing, Elon Musk said.