A quasar is now thought to be
A) the central core of an active galaxy.
B) a very active,very distant star.
C) a long-lived supernova explosion.
D) a nearby star,ejected with great violence out of a galaxy.

Question

Quizplus · Accepted Answer

A quasar is the central core of an active galaxy. It is a supermassive black hole that is surrounded by a disk of gas and dust. As matter falls into the black hole, it releases huge amounts of energy in the form of radiation, making the quasar the brightest object in the galaxy.

A Quasar Is Now Thought to Be