Known Space Explorer is a cinematic space exploration experience built with pure HTML, CSS, and JavaScript that visualizes the Solar System and the Observable Universe directly in your browser. No installation or build step required.
🌐 Try now at kunaldasx.github.io/space-simulator
Demo



Key Features
Journey Flow
- Launch - Watch your shuttle lift off from Earth
- Orbit - Float in space with Earth behind you
- Solar System - All 8 planets orbiting the Sun; tap any planet for details
- Observable Universe - Zoom out to the full 93-billion-light-year cosmos
Showcase Features
- Observatory-style HUD - Scene status with a live discovery count
- Universal Search - Search across planets, the Sun, galaxies, clusters, voids, and cosmic structures
- Direct Target Focusing - Focus directly on selected objects
- Random Discovery - Discover random objects throughout the experience
- Earth Shortcut - Quickly return focus to Earth
- Pan & Zoom - Mouse/touch pan with pinch or button zoom
- Responsive Detail Views - Explore object information with keyboard-friendly controls
- Escape-to-Close - Close detail views using the Escape key
Project Structure
The project is organized as a lightweight browser application with no build step:
Known Space Explorer
├── index.html # Page structure and scene controls
├── styles.css # Layout, visual, and animation styles
├── constants.js # Astronomy data for planets and universe objects
└── app.js # Scene navigation, rendering, gestures, and interaction logicHow To Use
No installation or dependency setup is required. Simply open index.html in any modern browser.
Clone the repository
git clone https://github.com/kunaldasx/space-simulator.git cd space-simulatorOpen the application
open index.htmlYou can also open
index.htmldirectly in any modern browser.
Technologies
This software uses the following technologies:
- HTML5
- CSS3 animations
- Vanilla JavaScript
License
© 2026 Kunal Das.
About the Author
Kunal Das

