Today I’m going to write about making a nebula shader to make awesome looking galaxies and nebulae. This is part of my masters thesis which involves writing a Renderman pipeline for RIT’s visualization software called Spiegel. The data that is visualized comes from the Center for Computational Relativity and Gravitation. For this article, the data doesn’t actually have to be real astrophysical data, it can be made up and it will still look good. The article is concerned more with the aesthetics than accurate visualization of the data.