Posted: Aug 25, 2020 12:06 pm
by Macdoc
Exploding stars may have caused mass extinction on Earth, study shows
August 18, 2020
University of Illinois at Urbana-Champaign, News Bureau
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. ... 142104.htm