IconVault's Solar System is an interactive orbit simulator built on real planet data: distance in AU, true orbital periods, diameters, moon counts, day lengths and a fun fact for all 8 planets. Watch them orbit in real time, drag the speed slider from 0.5 to 60 days per second, and click any planet to inspect it.

The animation runs 100% in your browser on canvas and it is free, with a one-click facts copy for school projects or presentations. Orbits use true relative periods, but distances are log-compressed so the outer planets stay visible, which is not to scale the way textbook diagrams imply.