An orrery is a mechanical model of the solar system that demonstrates the relative positions and motions of the planets and moons as they orbit around the sun.
1- It typically includes a series of gears and cogs that move the planets along their respective orbits 2- Orreries are often used as educational tools to teach about the solar system and the laws of planetary motion, and they can also be appreciated as works of art and engineering. 3-Gift Item For Adults is a selection of fun, age-appropriate items perfect for any special occasion. From toys to educational materials, these gifts are sure to bring a smile to any child's face.