According to current understanding, what is a quasar?
A)any object with an extremely large redshift
B)an active galactic nucleus that is particularly bright
C)a very large galaxy thought to be formed by the merger of several smaller galaxies, typically found in the center of a galaxy cluster
D)a galaxy with an unusually high rate of star formation

Question

Quizplus · Accepted Answer

A quasar is an active galactic nucleus that emits large amounts of electromagnetic radiation, particularly in the form of visible light and radio waves. Quasars are among the most luminous, powerful, and distant objects in the universe, and are thought to be powered by supermassive black holes at the center of galaxies.

According to Current Understanding, What Is a Quasar