Science
Mass Extinction May Have Been Caused By Near-Earth Supernova – ExtremeTech
Supernovas are known to be capable of sterilizing a planet if they go off within about 25 light-years. Earth may have had a brush with one or more such events about 360 million years ago.
The late Devonian extinction is one of the five major extinction events to have occurred on Earth. It’s not unusual for scientists to argue over what causes a mass extinction event — of the five, the only one we’ve decisively pinned down is the Cretaceous-Paleogene, aka K-PG, aka The Littlest Dinosaur’s Terrible, Horrible, No-Good Very Bad Day. The Late Devonian, however, is weird even by the standards of other extinctions. It looks like a protracted decline in speciation that persists for about…
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