Quasar vs Supernova - What's the difference?
quasar | supernova |
(galaxy) An extragalactic object, starlike in appearance, that is among the most luminous and thought to be the most distant objects in the universe.
(astronomy) A star which explodes, increasing its brightness to typically a billion times that of our sun, though attenuated by the great distance from our sun. Some leave only debris (Type I); others fade to invisibility as neutron stars (Type II).