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Triple-threat team of black holes lurks at a galaxy’s core

A supercomputer simulation of a supermassive binary black hole binary.

A computer simulation of a pair of supermassive black holes. Hints of a trio of black holes have been seen in radio observations. Credit: NASA GODDARD SPACE FLIGHT CENTER/ESA/GAIA/DPAC/SPL

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Nature 579, 11 (2020)




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