Galaxies in clusters are much more likely to become "active" than ones alone in space.

Question

Quizplus · Accepted Answer

This statement is true. Galaxies in clusters are more likely to experience gravitational interactions and mergers with other galaxies, which can trigger increased star formation and the activity of black holes at their centers. In contrast, isolated galaxies may not have enough nearby matter to trigger these processes. Galaxies in clusters have more interactions with each other and with gas in the cluster, leading to more opportunities for disturbances that can trigger a burst of star formation or the accretion of gas onto a central black hole, thereby making the galaxy "active".

Galaxies in Clusters Are Much More Likely to Become "Active