Star cloud simulation

I wanted to test myself and create a interstellar system, where the Newtonian physics rule. There is a really heavy object in the center (sun/black hole) and dust particles are around it, until some external force starts the movement of the dust.
I wanted just to give a little push in the beginning, and let the simulation go, and watch what the simulated Newtonian physics would do.
Later I added smoke simulation to the particles.

The scene bacame pretty heavy, and I had a pretty hard time rendering it.

The simulation was done in Houdini, rendered in Redshift.