Project 1: Solar System

Created by Caleb Jones.

Changes compared to tutorial:

1. Added Mercury, Venus, and Mars for a complete set of terrestrial planets.
2. Boosted sun's emissiveness, adjusted light color and range, and enabled shadows for more interesting, artistic lighting.
3. Adjusted planet sounds' pitches by size, e.g. Mercury is smallest, so it gets the highest pitch.

For future reference, the controls:

• Left click a celestial body to focus camera on it.
• Right click to reset focus back to the sun.