What's a safe distance from a supernova for Earth?

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What Will a Betelgeuse Supernova Look Like From Earth?

From Harvard-Smithsonian Center for Astrophysics via EarthSky

Newfound kind of supernova can tear apart a planet's atmosphere

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Huge, unusually powerful supernova explosion in space detected by

PBS Space Time What Supernova Distance Would Trigger Mass

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What happens when a supernova explosion occurs near the earth

What's a safe distance from a supernova for Earth?