The density of ordinary luminous matter can exceed the density of dark matter in which parts of galaxies?
A) everywhere inside galaxies
B) only in the outer regions of galaxies
C) only in star clusters
D) near the centers of galaxies
E) only around an AGN

Question

Quizplus · Accepted Answer

Near the centers of galaxies, the density of ordinary luminous matter can exceed the density of dark matter. This is because the concentration of luminous matter is highest in the central region, while dark matter is more uniformly distributed throughout the galaxy. Therefore, the gravitational effects of luminous matter are more dominant in the central region, resulting in a higher density compared to dark matter.

The Density of Ordinary Luminous Matter Can Exceed the Density