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Awesome question. I love this kind of thing. Wikipedia of course has a a page on near-Earth supernovae, and the first body paragraph briefly examines the effects of life on Earth. The only really ...
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#1: Attribution notice removed
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System
·
2020-06-01T14:13:39Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/3616 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/