Gravity 2D: Solar System

Each particle interacts gravitationally with all other particles.

This is based on some Coding Train videos (here and here and here) by Daniel Shiffman.

All Gravity 2D apps:

• Single: A single particle, customizable "sun" positions, and trail drawing
• Planet: A single "sun," single "planet," and full particle-to-particle gravity simulation
• Fixed Suns: Many particles, customizable "sun" positions, simplified gravity simulation
• Solar System: A single "sun," several "planets," and full particle-to-particle gravity simulation