Ages

Scientists Waited Ages to Find a ‘Missing Link’ Black Hole – Then Stumbled on 2

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A black circle with a blue outline against a black background with white specks

For decades, astronomers have searched without much joy for signs of “missing link” black holes, aka black holes with masses between those of “stellar-mass black holes” and “supermassive black holes.” The former have been seen scattered across the universe, and the latter are cosmic titans that dominate the hearts of galaxies — but when it … Read more