Build a rotating solar system with this geared, wind-up model of the sun and planets. Containing 59 pieces, children (with help) assemble the gears, wind-up motor, and planets and learn more about planetary orbits, as well as transmissions and gear ratios! Made of quality, snap together plastic components, this solar system will provide years of science learning! And just in case an elusive ninth planet is discovered, there is a built-in expansion slot! Experiment manual includes an overview of contents, step-by-step instructions and explanations. Perfect gift for space enthusiasts or perhaps as a science fair project! Diagonal cutters required.

Ages 6 yrs and up