The Orbiting Solar System kit allows you to create a a mechanical model of the solar system. Wind it up and watch the planets revolve around the sun. Made for Thames and Kosmos , assemble this complex machine, also known as an orrery, using snap-together plastic parts to learn how the gears and wind-up mechanism work to spin the model. Detail each planet with colourful, realistic-looking printed planet graphics. Discover how a special type of gear called a planetary gear is used to simulate the mesmerising motion of the solar system.
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