What if a star explodes near Earth?

People have witnessed supernovae for millennia, but what threat do they pose to life on Earth? This video is Hydrogen bomb vs Supernova fact was taken from this great article by xkcd/Randall Munroe – (based on the calculation by Andrew Karam, 2002) Cosmic bubble footage from Neutrino driven SN explosion simulations from Melott, A. et al. (2019). Hypothesis: Muon radiation dose and marine megafaunal extinction at the End-Pliocene supernova. Astrobiology, 19(6), 825-830. –

Courtesy of Veritasium on YouTube. Watch on YouTube ↗

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