Why Are Supermassive Galaxies Often Found at the Cores of Rich

question 82

Multiple Choice

Why are supermassive galaxies often found at the cores of rich galaxy clusters?

• A)Most of the matter forming the cluster fell into the center to form one large galaxy.
• B)They are the result of many galactic mergers; one galaxy growing at the expense of others.
• C)Such a large galaxy attracted smaller galaxies around it to form a cluster.
• D)Large galaxies, passing a cluster, get captured into the center.
• E)Many globular clusters swarmed together to form it.

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