An orrery is a mechanical model of the solar system that illustrates the relative positions and size of the planets, although totally accurate scaling cannot be achieved given the very large distances and Differences. Future astronomers will love having this solar system in miniature on their desktop or as room decor. Easy to assemble with detailed instructions. Included stickers have planetary symbols. Instructions include a secret code to unlock fascinating online facts about each Planet in our solar system. brainstorm toys is a range of fun, educational and interactive stem toys that brings together a host of fascinating items. Stem toys incorporate science, technology, engineering and maths and encourage children to explore and develop a passion for these subjects.