Science
Did a supernova cause Earth’s mass extinction 360 million years ago? – Space.com
The fossil record suggests Earth’s ozone layer took a protracted beating.
One of the worst extinction events in Earth’s history may have been triggered by a supernova
, the violent death of a distant star.
About 75% of all species on Earth died out at the end of the Devonian Period
, nearly 360 million years ago. Rocks from this era preserve many thousands of spores that appear to be scorched by ultraviolet (UV) radiation, indicating that something went seriously wrong with our protective ozone layer.
The destructive force may have come from very far afield, a new…
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