The scene shows the Sun, the eight planets and six moons moving on elliptical orbits computed from real orbital elements. Star colours follow the main-sequence temperature scale. Use the Focus buttons in the control panel to travel to any body; every body is also selectable from that list, so the simulation never depends on the pointer alone.
Universe Simulator
Generating worlds…
Eight planets, six moons and fourteen thousand stars, integrated from real J2000 orbital elements and rendered with Three.js.
Drag to accelerate from real time up to a century per second.
“Overview” compresses the outer orbits so every world stays on screen. “True to scale” spaces orbits by their real distance in astronomical units. Body radii stay exaggerated in both modes — at true scale Mercury would be smaller than a pixel.
Press 1–9 to jump, or click a body in the scene.
Sun
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