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Life & fun · July 23, 2026

SpaceSim

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

SpaceSim launched on July 23, 2026 with 7 votes, #2,664 of 24,623 launches that month and more than 90% of that year's launches.

Visit spacesim.co ↗SpaceSim alternativestop 11% of July 2026

In plain words

SpaceSim is a free, browser-based 3D space simulator that lets users explore the Solar System without signing up. Visitors can travel through a UTC-driven universe, observe real NASA ISS trajectories, adjust time, and inspect scientifically-backed celestial objects. The simulator includes features like a guided Grand Tour of the planets, procedurally-generated stars, and black hole visualizations. Users can collect postcards as they navigate. Content is clearly labeled as scientific, reconstructed, procedural, or experimental, making it suitable for space exploration enthusiasts and educators.

written from the facts on this page · October 2026

From the sources

SpaceSim is a free browser-based universe simulator. Travel through a UTC-driven 3D Solar System, inspect source-linked scientific state, observe Earth from a pinned NASA ISS trajectory, build procedural stars, visit compact objects, and collect postcards. Scientific, reconstructed, representative, procedural, experimental, and promotional content are clearly labeled. No signup required.

Explore a free 3D space simulator in your browser. Travel across the Solar System, change time, inspect source-backed worlds, and collect postcards. Choose a live journey Grand Tour of the Solar System Begin at the Sun, then follow a narrated journey across all eight planets. Follow a pinned NASA trajectory from a co-located Earth-limb observer. Tune a bounded stellar model and inspect how mass, heat, age, and family shape it. Navigate the first published simulated image of a black hole with an accretion disk. Open a known star or compact object in the experimental procedural stellarfrom spacesim.co

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