Scientists find an exotic black hole deemed a 'needle in a haystack'

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Estimated read time: 3-4 minutes WASHINGTON — Astronomers have spotted in a galaxy adjacent to our Milky Way that they are calling a cosmic "needle in a haystack" — a black hole that not only is classified as dormant but appears to have been born without the explosion of a dying star. Researchers said on Monday this one differs from all other known black holes in that it is "X-ray quiet" —...

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