A massive star in Andromeda skipped the supernova and turned into a black hole
Astronomers observed a massive star in the Andromeda Galaxy vanish without the expected explosion, suggesting it collapsed directly into a black hole in a rare cosmic event known as a failed supernova.
The star M31-2014-DS1 was a massive red supergiant that suddenly blinked out of existence without the typical brilliant flash of a supernova. Researchers believe the star became so dense that its core collapsed instantly, pulling its outer layers inward to form a black hole.
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