Which of the following would NOT be considered evidence for dark matter in clusters of galaxies?

Question

Quizplus · Accepted Answer

The total amount of stars within a cluster of galaxies does not provide evidence for dark matter, as dark matter does not interact with light and is therefore invisible, making it impossible to detect directly through observations of stars or other electromagnetic radiation. However, the other options all provide evidence for dark matter in clusters of galaxies. The velocities and radii of galaxy orbits around the center of mass in the cluster are consistent with the presence of additional, unseen matter; the temperature of the intergalactic gas is lower than expected based on the amount of visible matter, suggesting the presence of additional mass; and the curvature of gravitationally-lensed galaxies can be explained by the presence of dark matter.

Which of the Following Would NOT Be Considered Evidence for Dark