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NGC 6240 is a system in which two

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supermassive black holes are Amir three

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thousand light-years apart virtually

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nothing in astronomical terms these

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black holes the two bright point light

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sources in the middle are such close

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proximity scientists think they're in

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the active spiral and toward each other

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this is a process that began but 30

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million years ago

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it's estimated the two black holes will

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eventually drift together and merge into