This experience is from the University of Canterbury Applied Immersive Game Design / Game Development program course "PROD321 - Interactive Graphics and Animation". Students have to create planets in code, demonstrating different graphics techniques, and then they are all put together into a solar system.

It can be quite slow to generate the planets depending on their complexity, and unfortunately threading doesn't really work properly in Unity's WebGL. To make things generate faster, try looking away at blank space.