We are going to build a single-page web app that uses the pre-provided three.min.js library.
 The app will feature:
   - A 3D solar system with the sun and several planets (e.g., Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune)
   - Each planet will have a different size and orbit speed, and will orbit around the sun.
   - Orbit-drag camera controls (using THREE.OrbitControls)
   - A starfield in the background.

 Steps:
   1. Check if three.min.js is present in the current directory.
   2. Create an index.html file that includes:
        - A <script> tag to load three.min.js
        - A <style> tag for basic full-page styling
        - A <script> tag for our JavaScript code that:
            a. Sets up the scene, camera, and renderer.
            b. Creates a starfield by generating a large number of white points in a sphere.
            c. Creates the sun (a large sphere with emissive material) and planets (smaller spheres with textures or colors).
            d. Sets up an animation loop to update the planet positions (orbiting) and the camera controls.
            e. Adds OrbitControls for dragging to orbit the camera.

 Since we cannot use external resources (like textures), we will use simple colors for the planets.

 Let's check the current directory for three.min.js.

Now I'll create a complete single-page web app with a 3D solar system using THREE.js. The app will include:
- Sun and orbiting planets with varied sizes and speeds
- Orbit-drag camera controls
- Starfield background
- All CSS and JavaScript inline in one HTML file

I've created a complete 3D solar system web app in `index.html` that uses the pre-provided `three.min.js` library. The app includes:

**Features:**
- **Sun and 8 planets** with realistic relative sizes and varied orbit speeds
- **Orbit-drag camera controls** - drag to orbit around the solar system
- **Scroll to zoom** - mouse wheel zooms in/out with distance limits
- **Starfield background** with 10,000 randomly placed stars
- **Orbit rings** showing the orbital paths of each planet
- **Realistic lighting** with a sun that emits light
- **Smooth animations** with planets rotating on their axes while orbiting

**Key Implementation Details:**
- Uses THREE.js for 3D rendering (loaded from local `three.min.js`)
- Each planet has unique orbit speed and rotation speed
- Sun has a glowing effect and acts as a light source
- Camera orbits around the center of the scene when dragging
- Responsive design that adapts to window resizing

The solar system is fully self-contained in a single HTML file with inline CSS and JavaScript. No external resources or network requests are needed - it runs completely sandboxed.

You can open `index.html` in a web browser to explore the interactive 3D solar system!