Hubble and Chandra have uncovered a pair of supermassive black holes that are just 300 light-years apart. They are buried deep inside the heart of a pair of colliding galaxies that will eventually merge to make a bigger black hole.
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Hubble and Chandra have uncovered a pair of supermassive black holes that are just 300 light-years apart. They are buried deep inside the heart of a pair of colliding galaxies that will eventually merge to make a bigger black hole.