The impact that made the submarine depression probably occurred close to the dinosaur-ending Chicxulub event, but researchers say much remains to be learned.
Unusual traces found in Texas show what happened when the Chicxulub asteroid vaporized a thick bed of rock, unleashing superheated gas that kicked off a calamitous period of climate changes.
We won’t know for sure unless NASA’s Artemis project finds microfossils on the Moon. But it’s possible that, as with Mars, early life got started but died out.