Astronomers watch a massive star collapse into a black hole without a supernova - ScienceDaily

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1. Astronomers watch a massive star collapse into a black hole without a supernova  ScienceDaily
2. Scientists Capture the Clearest View Yet of a Star Collapsing Into a Black Hole  Columbia University in the City of New York
3. Astronomers witness vanishing star collapse into a black hole in Andromeda galaxy  Space
4. Have astronomers witnessed the birth of a black hole?  NPR
5. Supergiant Star Collapsed into Stellar-Mass Black Hole in Andromeda Galaxy  Sci.News

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