Orbiting Solar System Retro depending on which way you

depending on which way you lay it

Open the covers for bright illustrations - perfect for flights of inspiration

demonstrating how the same mechanical parts can come together to yield many different results

Once you've found your next target

Adventures await

Orbiting Solar System Retro depending on which way youSet the planets in motion with a flick of your wrist! Build a mechanical model of the solar system including the sun and eight planets, wind it up, and watch the planets revolve around the sun. Assemble this complex machine using snap together plastic parts to learn how the gears and wind up mechanism work to spin the model. Detail each planet with colorful, realistic looking printed planet graphics. Learn about the order of the planets, their