I'll create a self-contained index.html file with a 3D solar system using three.js. The file will include the sun, planets orbiting at different speeds and sizes, orbit-drag camera controls, and a starfield background.

I've created a complete 3D solar system in a single index.html file. The implementation includes: 1. A sun with a glowing effect at the center 2. Eight planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune) with different sizes, colors, and orbit speeds 3. Saturn has rings as a special feature 4. Each planet orbits at a different speed, creating a dynamic solar system 5. Orbit controls for the camera, allowing users to drag to rotate, zoom, and pan around the scene 6. A starfield background with 10,000 stars for a space-like environment 7. Responsive design that adjusts to window size The planets are positioned at different distances from the sun and move at varying speeds to simulate a realistic solar system. The camera controls allow for interactive exploration of the 3D space. The file is completely self-contained with all CSS in a <style> tag and JavaScript in a <script> tag, and it loads the pre-provided three.min.js library as requested.