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October 29, 2020, 7:09 am UTC    
August 20, 2020 04:32PM
Exploding stars may have caused mass extinction on Earth,
study shows, University of Illinois at Urbana-Champaign, August 18, 2020
[www.sciencedaily.com]

"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
[www.pnas.org]

Yours

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)
Subject Author Posted

Supernova triggers for end-Devonian extinctions

Paul H. August 20, 2020 04:32PM



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