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?