Supernova triggers for end-Devonian extinctions.

[Oxytropidoceras]

Exploding stars may have caused mass extinction on Earth, study

shows, University of Illinois at Urbana-Champaign, August 18, 2020

 

"Killer cosmic rays from nearby supernovae could be the

culprit behind at least one mass extinction event, researchers 

said, and finding certain radioactive isotopes in Earth's

 rock record could confirm this scenario."

 

The open access paper is:

 

Brian D. Fields, Adrian L. Melott, John Ellis, Adrienne F. 

Ertel, Brian J. Fry, Bruce S. Lieberman, Zhenghai Liu, 

Jesse A. Miller, Brian C. Thomas. Supernova triggers

for end-Devonian extinctions. Proceedings of the

National Academy of Sciences, 2020; 202013774 

 

Yours

 

Paul H.