Interactions among galaxies also are thought to influence a galaxy's type in at least some cases. Which of the following does not support the idea that interactions can shape galaxies?
A)the fact that more distant galaxies have larger redshifts
B)the fact that galaxies with distorted appearances are more common at great distances than nearby
C)computer modeling of collisions between galaxies
D)the presence of features, such as "tails" extending out of galaxies, bridges between galaxies, and rings of stars around galaxies

Question

Quizplus · Accepted Answer

The fact that more distant galaxies have larger redshifts is unrelated to the idea that interactions can shape galaxies. Redshift is caused by the Doppler effect and is a measure of how fast an object is moving away from us. It does not provide any information about whether or not a galaxy has interacted with other galaxies.

Interactions Among Galaxies Also Are Thought to Influence a Galaxy's