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An artist’s impression shows what the binary star system VFTS 243－ looks like, which contains a black hole and a large glowing star orbiting each other. ESO / L. Calcada / Handout via REUTERS WASHINGTON－Astronomers have spotted in a galaxy adjacent to the Milky Way what they call a cosmic “needle in a haystack”－a black hole that is not only classified as dormant, but also appears to have been born without a stellar death explosion. Researchers said Monday this one differs from all other known black holes in that it is “quiet X-ray”—it doesn’t emit strong X-ray radiation that indicates it devours nearby matter with a strong gravitational pull—and that it doesn’t. born in the explosion of a star called a supernova. Black holes are extremely dense objects with such strong gravity that not even light can escape. This one, with a mass at least nine times that of the sun, was detected in the Tarantula Nebula region of the Large Magellanic Cloud galaxy and i...

Astronomers have seen in the galaxy adjacent to our Milky Way what they call the cosmic “needle in the haystack” – a black hole that is not only classified as dormant but appears to have been born without the explosion of a dying star. Researchers said Monday this one differs from all other known black holes in that it is “quiet X-ray” – it doesn’t emit the intense X-ray radiation that indicates it devours nearby matter with a strong gravitational pull – and it doesn’t. born in the explosion of a star called a supernova. Black holes are extremely dense objects with such strong gravity that even light cannot escape. This one, with a mass at least nine times that of our sun, was detected in the Tarantula Nebula region of the Great Magellanic Cloud galaxy and is located about 160,000 light-years from Earth. A light year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km). A very luminous and hot blue star with a mass about 25 t...