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.

Question

Quizplus · Accepted Answer

Supermassive galaxies at the cores of rich galaxy clusters are often the result of many galactic mergers, with one galaxy growing at the expense of others. This process can lead to a massive galaxy at the center of a cluster. Supermassive galaxies often found at the cores of rich galaxy clusters are the result of many galactic mergers. As galaxies merge, they combine their mass and create larger and more massive galaxies. Over time, this can lead to the formation of a supermassive galaxy at the center of a cluster.

Why Are Supermassive Galaxies Often Found at the Cores of Rich