Elon Musk's SpaceX Mars-Colonizing Starship Spacecraft Just Overcame a Big Hurdle

Elon Musk has confirmed Starship prototype SN4 passed a cryogenic proof test on Sunday, a milestone for the project designed to send payloads to Mars. Taking place at a SpaceX site in Texas, the most recent iteration became the first full-scale Starship prototype to pass the crucial test following a series of setbacks with prior models including the MK1, SN1 and SN3, NasaSpaceFlight.com reported. The cryogenic proof test—which fills the ship with liquid nitrogen to ensure it is able to survive in flight pressure conditions—was previously successful in the SN2 prototype, but that was not a full-scale build. The news...