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Mzu 3D Solar System
A free, browser-based 3D Solar System explorer with first-person expeditions to eight worlds. No download, account, or AI service is needed.
For agents: Free browser-based 3D solar system explorer with planet facts from NASA sources, tours, scale modes and embeddable views. Not a live ephemeris; no account neede
3d solar systemplanetsastronomybrowser simulatornasa data
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-25T09:42:08.699Z. Cached copy · Source on 3dsolarsystem.net
# Mzu 3D Solar System
> A free, browser-based 3D Solar System explorer with first-person expeditions to eight worlds. No download, account, or AI service is needed.
## Start here
- [Solar system 3D simulator](https://www.3dsolarsystem.net/): Rotate, zoom and select the Sun, eight planets, moons and dwarf planets; follow a planet tour; switch artistic or real scale and speed; share, save or embed a view. Not a live ephemeris.
- [Explore space online in 3D](https://www.3dsolarsystem.net/space-explorer-guide.html): step-by-step guide to the controls, scale and speed menus, tour, expeditions and embedding.
- [Planet sizes and distances compared](https://www.3dsolarsystem.net/planet-sizes-and-distances.html): NASA diameters, distances, periods and a 1-metre-Sun scale model.
## Planet pages (3D view + facts + FAQ with NASA sources)
- [Mercury](https://www.3dsolarsystem.net/mercury.html): smallest planet; 88-day year, 176-day solar day, −180 °C to 430 °C.
- [Venus](https://www.3dsolarsystem.net/venus.html): hottest planet (~465 °C); spins backwards; a day is longer than its year.
- [Earth](https://www.3dsolarsystem.net/earth.html): 23.4° tilt and seasons; the Moon at 384,400 km.
- [Mars](https://www.3dsolarsystem.net/mars.html): red iron-oxide dust, thin CO₂ air, Olympus Mons, 687-day year.
- [Jupiter](https://www.3dsolarsystem.net/jupiter.html): largest planet, no solid surface, Great Red Spot, Galilean moons.
- [Saturn](https://www.3dsolarsystem.net/saturn.html): icy rings ~270,000 km across, density below water, Titan.
- [Uranus](https://www.3dsolarsystem.net/uranus.html): ~98° axial tilt, 84-year orbit, methane blue-green colour.
- [Neptune](https://www.3dsolarsystem.net/neptune.html): winds up to ~2,000 km/h, 165-year orbit, found by mathematical prediction.
## First-person expeditions (each page ends with a crawlable article: facts, discoveries, controls, science notes)
- [Walk on the Moon](https://www.3dsolarsystem.net/moon.html): walk and jump in lunar gravity (1.62 m/s²) under a black sky with Earth above the horizon; real NASA lunar module model.
- [Walk on Mars](https://www.3dsolarsystem.net/mars-expedition.html): 3.71 m/s² gravity, layered rock, dunes, butterscotch sky; real NASA rover model.
- [Walk on Venus](https://www.3dsolarsystem.net/venus-expedition.html): volcanic plain under a heavy orange sky at ~465 °C; Magellan orbiter overhead.
- [Walk on Mercury](https://www.3dsolarsystem.net/mercury-expedition.html): cratered plain, black sky, a Sun two to three times wider than from Earth, lobate scarp and hollows.
- [Descend into Jupiter](https://www.3dsolarsystem.net/jupiter-expedition.html): probe descent through ammonia clouds, a giant storm and the lightning layer.
- [Fly through Saturn's rings](https://www.3dsolarsystem.net/saturn-expedition.html): ring-plane cruise inside the Cassini Division at true ring proportions, beside NASA's Cassini model.
- [Fly through Uranus's rings](https://www.3dsolarsystem.net/uranus-expedition.html
…
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