The total number of galaxies in a rich, regular cluster of galaxies such as the Coma cluster is believed to be
A) between a few thousand and 10,000.
B) over 1 million.
C) about 1000.
D) several dozen.

Question

Quizplus · Accepted Answer

Rich, regular clusters of galaxies, like the Coma Cluster, typically contain a few thousand to 10,000 galaxies. These clusters are massive collections of galaxies bound together by gravity, and their large numbers reflect the dense concentration of galaxies in these regions of space.

The Total Number of Galaxies in a Rich, Regular Cluster