I suppose one could argue that gravity prevents that from happening...
Anyway it looks like a spiral galaxy, and that is where the electrical vortex theory making far more sense in throwing stars out of the center of galaxy, after combining protons and electrons drawn in from plasma clouds in space in the center of the vortex. Instead of having a supermassive black hole pulling everything in, and you don't have to invent a bunch of nonsense like dark matter and dark energy to explain how it is all connected...
Are you paying attention Goldiestein? No satanical dark matter/energy required...