br00t4c, Is Earth Safe from a Nearby Supernova?
https://www.scientificamerican.com/article/is-earth-safe-from-a-nearby-supernova/
br00t4c, Is Earth Safe from a Nearby Supernova?
https://www.scientificamerican.com/article/is-earth-safe-from-a-nearby-supernova/
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