3D models
Three rungs of scale, each hundreds of thousands of times larger than the last
1. ~9 billion km3D Solar System
Eight planets orbiting the Sun, each with its real surface map and true axial tilt. Click a planet for its figures and article.
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2. ~100,000 light-yearsThe Milky Way in 3D
Our galaxy with its four spiral arms, central bulge and globular-cluster halo. An edge-on view shows how thin the disk is, and a marker gives the Sun's position.
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3. 46.5 billion light-years in radiusMap of the Universe in 3D
The cosmic web at the largest scale: galaxy clusters strung into filaments around enormous voids. Includes a scale ladder from the Milky Way out to the cosmic horizon.
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