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June 18, 2024 11:25 PM

Scientists witness a dormant supermassive black hole roar to life

At the center of the Milky Way galaxy resides a supermassive black hole four million times the mass of our sun called Sagittarius A* that some scientists have called a gentle giant because of its quiescence. But someday it could become a beast. Researchers said on Tuesday they have observed in real time a dramatic brightening at the heart of another galaxy apparently caused by a supermassive black hole awakening from dormancy and beginning to gorge itself with nearby material. It marks the firs...

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