Scientists from Harvard, MIT, Princeton and others have collaborated on the world’s largest and most detailed computer simulation models of the universe to date. It’s called Illustris and it was simulated on the world’s fastest super-computer. You should check out the results in this video. Take a look at the galaxies and the surrounding dark matter.
Besides simulating gravity and hydrodynamics, it also models complex chemical processes in the diffuse gas, radiation, and magnetic fields. It even takes into the account the formation of black holes. Very cool. I really like the music too. “It’s not real, it’s just a computer generated fantasy!”