Quasars must be small because they?

Question

A.) have high radial velocities
B.) are very luminous
C.) are surrounded by quasar fuzz
D.) radiate huge amounts of energy
E.) fluctuate rapidly

Answer 1

Quazers are actully very distant galaxies.

Answer 2

A. Some of them have rotation times( days) of milliseconds.

Answer 3

D

Answer 4

.