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2 supermassive black holes may collide 100 years from now — and Earth would feel it

In a galaxy 500 million light-years away, two supermassive black holes could merge, spreading gravitational waves across the ...

Two giant black holes are set to collide in the next 100 years, and Earth could feel the ...

A supermassive black hole binary system (two black holes orbiting each other) has been directly identified in the final ...