Quasars remain unresolved sources, even with the best telescopic observations, because they
A) are too luminous.
B) occupy a very small volume.
C) are quite blue.
D) produce copious amounts of radio energy.
E) host supermassive black holes.

Question

Quizplus · Accepted Answer

Quasars appear as point sources because they occupy a very small volume, despite being extremely luminous and distant.

Quasars Remain Unresolved Sources, Even with the Best Telescopic Observations