Distance from the Galaxy is estimated about 2.5 billion light years. It's considered that quasars are emitting gigantic energy because they're extremely bright in spite of their stupendous distance. Their quantities of emitting energy is imagined about some thousands or some ten thousands times of that of whole of our Galaxy. But we don't know what they really are yet, one of greatest mysteries in contemporary astronomy. A star-like image an arrow indicates is 3C273.
Big telescopes can detect a jet-structure stretched from the nucleus with a visible ray.
1999 by Naoyuki Kurita, All rights reserved.