Which of the following indicates that quasars must be small?
A)They have high radial velocities.
B)They are surrounded by quasar fuzz.
C)They radiate huge amounts of energy.
D)They fluctuate rapidly on time scales as short as a few hours.

Question

Quizplus · Accepted Answer

The fact that quasars fluctuate rapidly on time scales as short as a few hours indicates that they must be small. If they were larger, such rapid fluctuations would not be possible.

Which of the Following Indicates That Quasars Must Be Small