All of you hoping for #Betelgeuse to explode think about all the planetary systems near it that will be affected. 
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Has anybody posited a scale of blast radii for supernovae? Do we know enough about how various star classes explode for that to be useful?
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Yes, many studies, from subtle atmospheric effects to planet-wide sterilization (e.g. equation 3 of this paper) https://www.nature.com/articles/s41598-017-05796-x …

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