The surprising observational fact about quasars is that they appear to:
A)be the largest known structures in the universe, although they produce only modest amounts of energy.
B)be moving rapidly toward us, while emitting large amounts of energy.
C)be associated with ancient supernova explosions.
D)produce the energy output of 1000 galaxies in a volume similar to that of our planetary system.

Question

Quizplus · Accepted Answer

Quasars are extremely luminous objects, producing the energy output of over 1000 galaxies in a volume similar to that of our planetary system. This is surprising because they are typically associated with black holes, which are known for their high gravitational pull but not necessarily for producing large amounts of energy.

The Surprising Observational Fact About Quasars Is That They Appear