3D Space Simulator Online | SpaceSim

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SpaceSim: explore the universe in 3D

Explore a free 3D space simulator in your browser. Travel across the Solar System, change time, inspect source-backed worlds, and collect postcards.

Open the Solar System simulator<br>Build a procedural star

Choose a live journey

Grand Tour of the Solar System

Begin at the Sun, then follow a narrated journey across all eight planets.

Travel Aboard the ISS

Follow a pinned NASA trajectory from a co-located Earth-limb observer.

Build Your Own Star

Tune a bounded stellar model and inspect how mass, heat, age, and family shape it.

Jean-Pierre Luminet's Black Hole

Navigate the first published simulated image of a black hole with an accretion disk.

Explore the Solar System

The Sun

Mercury

Venus

Earth

The Moon

Mars

Jupiter

Saturn

Uranus

Neptune

Explore known stellar objects

Open a known star or compact object in the experimental procedural stellar laboratory.

Alpha Centauri A<br>Alpha Centauri B<br>Proxima Centauri<br>Barnard's Star<br>Sirius A<br>Sirius B<br>Sirius A and B<br>Betelgeuse<br>Rigel<br>WR 134<br>WISE 0855-0714<br>Crab Pulsar<br>SGR 1935+2154<br>Cygnus X-1<br>Sagittarius A*<br>TON 618

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