Astronomers simulated Betelgeuse going supernova and found that when it explodes, it will shine as bright as a Half Moon, but “All this brightness would be concentrated into one point,” Howell says. “So it would be this incredibly intense beacon in the sky that would cast shadows at night."

Astronomers simulated Betelgeuse going supernova and found that when it explodes, it will shine as bright as a Half Moon, but “All this brightness would be concentrated into one point,” Howell says. “So it would be this incredibly intense beacon in the sky that would cast shadows at night."

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