From ArsTechnica:
SpaceX loses its third Starship prototype during a cryogenic test [arstechnica.com]
"We will see what data review says in the morning."
This week, SpaceX workers in South Texas loaded the third full-scale Starship prototype—SN3—onto a test stand at the company's Boca Chica launch site. On Wednesday night, they pressure-tested the vehicle at ambient temperature with nitrogen, and SN3 performed fine.
On Thursday night SpaceX began cryo-testing the vehicle, which means it was loaded again with nitrogen, but this time it was chilled to flight-like temperatures and put under flight-like pressures. Unfortunately, a little after 2am local time, SN3 failed and began to collapse on top of itself. It appeared as if the vehicle may have lost pressurization and become top-heavy.
Shortly after the failure, SpaceX's founder and chief engineer, Elon Musk, said on Twitter, [twitter.com] "We will see what data review says in the morning, but this may have been a test configuration mistake." A testing issue would be good in the sense that it means the vehicle itself performed well, and the problem can be more easily addressed.
A YouTube Video [youtube.com] is included in the article at no extra cost.