Enormous black hole resides at core of tiny galaxy

Dark giant stores 15 percent of parent star cluster’s weight

The galaxies M60-UCD1 and M60

ITTY BITTY LIVING SPACE  The tiny galaxy M60-UCD1 (circled in white) harbors a black hole with the mass of around 21 million suns. M60-UCD1 may be a remnant of a larger galaxy torn apart by the massive galaxy M60 (center), which is also pulling in a nearby spiral galaxy (upper right).

NASA, ESA

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