9. In the early 1930's, Fritz Zwicky measured the velocities of galaxies moving within the Coma Cluster. His measurement showed that the galaxies in the
9. In the early 1930's, Fritz Zwicky measured the velocities of galaxies moving within the Coma Cluster. His measurement showed that the galaxies in the Coma Cluster have an average velocity of ~1000 km/s. The visible radius of the Coma Cluster has been measured to be 3 Mpc. (a) Estimate the mass of the Coma Cluster based on this information alone, and be sure to state any assumptions you make. (b) A rough estimate of the total mass of visible matter in the Coma Cluster is 5x 10 2 Mo. What does this mean when comparing the measured total visible mass to that measured by Zwicky? Explain you answer in detail
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