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. *Please note that all items within our outlet section contain a level of damage to the packaging, which in no way effects game play. A Grade products will arrive in their cellophane and have superficial damage to the box. Full descriptions of our grades can be found on our Outlet page, for more information please check our terms and conditions.