Quasars and Their Host Galaxies
Copyright: John Bahcall (Institute for Advanced Study, Princeton) Mike Disney (University of Wales) and NASA
Quasars reside in a variety of galaxies, from normal to highly disturbed. When seen through ground-based telescopes, these compact, enigmatic light sources
resemble stars, yet they are billions of light-years away and several hundred billion times brighter than normal stars.
Last Update: 1 September 2019