We should expect galaxies to collide fairly often because

Question

Quizplus · Accepted Answer

Galaxies are generally quite large with respect to their separation distances, which makes them more likely to experience gravitational interactions and collisions. Additionally, galaxies tend to occur in clusters, which increases the chances of close encounters between galaxies. Therefore, both options A and C are true, making D the best answer. Option B is not directly relevant to the likelihood of galactic collisions. Galaxies are large and occur in clusters, so their separation distances are relatively small. This increases the likelihood of collisions between galaxies. Additionally, clusters of galaxies are also gravitationally bound, which further increases the chances of collisions.

We Should Expect Galaxies to Collide Fairly Often Because