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Stars shouldn't just disappear from the night sky without a trace. They should either dim, or if massive enough, explode spectacularly. And yet, astronomers have documented at
"Were one to stand gazing up at a visible star going through a total collapse, it might, just at the right time, be like watching a star suddenly extinguish and disappear from the heavens," said study co-author Alejandro Vigna-Gómez at the Niels Bohr Institute in aabout the work. "The collapse is so complete that no explosion occurs, nothing escapes and one wouldn't see any bright supernova in the night sky.
Their evidence comes from observations of a binary star system, VFTS 243, where a star ten times the mass of our Sun and a black hole are orbiting around each other in a morbid dance. This is an "extraordinary system," Vigna-Gómez says, because it contains almost no evidence of a supernova.
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