this post was submitted on 02 Aug 2025
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Did A Supernova Trigger a Burst of Evolution (www.youtube.com)
submitted 6 days ago* (last edited 6 days ago) by limer@lemmy.ml to c/science@lemmy.world
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About 2.6 million years ago, there may have been a supernova (or other event) that caused a burst of comic rays lasting 100k years.

15 minute video

I follow this guy, Paul Fellows, on YouTube, and he has re-awakened an interest in astronomy for me during the last few months. He may not have a very large subscriber count, but is well regarded by several.

For those who do not like watching video, here is a link describing some of the research mentioned ,

DNA-busting radiation from star-killing supernova could have influenced evolution on Earth

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[โ€“] Delta_V@lemmy.world 2 points 19 hours ago (1 children)

That's around the same time as Earth last passed through the central plane of the Milky Way.

https://www.bu.edu/articles/2024/the-solar-system-may-have-passed-through-interstellar-clouds/

One theory predicts that passing through a sufficiently dense cloud of interstellar gas would collapse our Sun's heliosphere, exposing Earth to cosmic rays & producing evidence that would be difficult to distinguish from a nearby supernova hitting our planet.

[โ€“] limer@lemmy.ml 2 points 18 hours ago

I wonder if both the cold cloud and a supernova happened at the same time?