Dark matter is primarily found in the outer regions of galaxies, raising questions about its gravitational effects. Some argue that this distribution could lead to galaxies being pulled apart due to the gravitational influence of dark matter. However, it is noted that the net gravitational force within a shell of matter remains zero, regardless of dark matter density. This suggests that dark matter's presence does not necessarily destabilize galaxies. Understanding the role of dark matter in galaxy dynamics remains a complex topic in astrophysics.
