HomeAstronomyHow black holes and galaxies play tug-of-war across the cosmos

How black holes and galaxies play tug-of-war across the cosmos

Black holes and galaxies have a complicated relationship. 

Astronomers think nearly every galaxy hosts a giant black hole in its core. And while those black holes truly are massive — weighing millions, or even billions, of solar masses — they are tiny compared with their home galaxies, reaching less than 1% of the mass of a typical galaxy and a volume a billion times smaller. 

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