Author Question: Which of the following is true of rich galaxy clusters? A) They primarily consist of irregular ... (Read 85 times)

Tazate · **on:** Jul 27, 2018

Which of the following is true of rich galaxy clusters?

A) They primarily consist of irregular galaxies.
B) More than 80 percent of their galaxies are spiral galaxies.
C) Less than 20 percent of their galaxies are E and S0 galaxies.
D) They often contain one or more giant elliptical galaxies at their centers.

Question 2

Which of the following is true of poor galaxy clusters?

A) They contain about 1500 to 2500 galaxies.
B) They primarily contain elliptical galaxies.
C) They are densely crowded toward the center.
D) They are irregularly shaped.