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Astronomy

How Active Galactic Nuclei Affect Their Host Galaxies

Quick fact

A single active galactic nucleus can release more energy than all the stars in its galaxy combined, yet it occupies a space smaller than our solar system.

Why this is interesting

Nearly every large galaxy harbors a supermassive black hole, but when one actively feeds, it can alter the fate of billions of stars. How can a tiny region at the center of a galaxy affect the whole galaxy?