On Sunday, April 26, SpaceX proved that four is the company’s lucky number as the long-awaited cryogenic proof test for Starship SN4 occurred, and for the first time in the Starship history, the test resulted in success. SN4 passed cryo proof! ? pic.twitter.com/EJakThZRGF — Elon Musk (@elonmusk) April 27, 2020 The cryogenic proof test