Space Simulator Online

Space Simulator Online is a free interactive model of the universe that runs in your web browser. There is nothing to install. Everything you see is based on scientific data and real images.

What you can do

• Explore in 3D – fly from Earth through the Solar System and out to the Milky Way.
• Guided tour – a narrated tour of 15 stops, from the Sun to Voyager 1, with a question at every stop.
• Planet Hunter – search real light curves from NASA's TESS telescope for the dips of transiting planets, check your candidates and see the planet you found in 3D.
• Exoplanets and the Milky Way – a 3D Milky Way built from Gaia and NASA maps, with real exoplanet systems at their measured distances.
• Sounds of space and gravitational waves – real recordings from NASA spacecraft such as Voyager 1, Juno and Cassini, and real LIGO data from merging black holes, including GW150914.
• Galaxy collisions, a journey from Earth to the cosmic microwave background, a star size comparison and a light-year birthday finder.

Data sources: NASA/JPL-Caltech images and maps, JPL Horizons, NASA TESS (via MAST and ExoFOP), the NASA Exoplanet Archive, ESA Gaia, LIGO / GWOSC and Solar System Scope textures. Sources are credited on the About page.

The interface is available in 10 languages: English, Chinese, Japanese, Korean, Spanish, French, German, Portuguese, Russian and Arabic.

Who it's for: students, teachers and anyone curious about space.

Feedback welcome: I'd love to hear what feels confusing, which objects or missions you'd like to see next, and how it runs on your device.