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From: RonO <rokimoto557@gmail.com>
Newsgroups: talk.origins
Subject: Supernovae may have triggered two mass extinctions
Date: Sat, 5 Apr 2025 19:40:05 -0500
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https://www.sciencedaily.com/releases/2025/03/250313130822.htm

The evidence is pretty thin, but the claim is that the Devonian and 
Ordovician extinction events that occurred 372 and 445 million years 
ago, respectively, may have been caused by supernovas exploding within 
65 light years (20 parsecs) of our solar system.

Ron Okimoto