A living solar system for gravity, spin, air, light, and life. Click a world. Open a lesson. Watch the physics happen.
Hover or tap a world to see its name. Pin names if you want every label at once.
Pause, trail, and speed the clock — Mercury darts, Neptune glides.
Watch spin arrows: most worlds turn west to east. Venus and Uranus go the other way (retrograde).
Hunt hidden flybys: UFOs with searchlights, a junk freighter, a toy battle moon, comets, Starman in a red roadster, Starlink around Earth, and big rocks in the belt.
Look past the planets: nebulae, a galaxy, a black-hole disk. Switch the bottom bar to Constellations and drag the sky to find Orion, the Dipper, and the Southern Cross.
Switch the bottom list to Constellations, then drag the sky. Orion, the Big Dipper, and the Southern Cross are pictures we draw. The stars in one figure are not really neighbors.
22 lessons across physics, astronomy, chemistry, biology, and ecology.
Earth is NASA Blue Marble. Other globes, clouds, and night lights are Solar System Scope maps (CC BY 4.0) from NASA data. The deep sky is painted in the false-color language of NASA's Chandra X-ray Observatory.