Coursera Solar System

This is my Solar System project. I added three additional planets: Mercury, Venus and Mars. I adjusted the sizes, relative rotation speeds (around themselves) and revolution speed (around the Sun) to be consistent with real world relative speeds of these planets. 

I have added a speed control slider which allows to increase the simulation speed up to 20x. The speed control affects the Sun, planets and comets speeds. It does not affect the comets spawning interval.