I wrote a cellular automata program in MATLAB that generates an ecosystem-like world. I used that program to color the earth in a 3-body simulation, making a neat solar system model. I should note that the scale and orbit of the bodies in my model are not accurate to the actual sun, earth, and moon. I wrote a medium post about the project which can be read here:  https://medium.com/@ciscosebas/making-cellular-automata-planets-in-matlab-with-a-3-body-simulation-b246122c246