3D Metal Mechanical Deluxe Solar System Orrery Model Kit, 120PCS Metal Planetary Gear Model with Rotating Planets, DIY Handmade Educational Astronomy Display for Adults & Collectors

【Challenging and Rewarding DIY Experience】：Composed of 120 precision brass parts, this Solar System orrery takes about 20 hours to assemble. It offers a hands-on mechanical challenge that strengthens concentration, spatial imagination, and craftsmanship, ideal for DIY enthusiasts and collectors. 【Realistic Planetary Motion Display】：Each planet—Mercury, Venus, Earth, Mars, Jupiter, and more—revolves around the Sun at accurate relative speeds. Venus even performs retrograde rotation, allowing you to observe the dynamic operation of the solar system in a visually captivating and scientifically precise way. 【Elegant Brass Construction and Fine Detail】：Made of pure brass with a polished golden finish, the orrery radiates vintage elegance and mechanical artistry. The 10-inch base and 19-inch height create a majestic presence, with wooden and sandstone planetary spheres adding realism and refined craftsmanship. 【Educational and Historical Value】：Inspired by the first modern orrery designed by George Graham and Thomas Tompion in 1704, this model serves as an engaging teaching tool for astronomy. It helps children, students, and parents explore planetary motion, orbits, and the beauty of celestial mechanics together. 【Perfect Gift and Collector’s Treasure】：Once charged, the mechanism sets the wheels spinning, demonstrating planetary motion in a mesmerizing display. It’s an ideal gift for astronomy lovers, educators, engineers, or collectors, offering both educational value and aesthetic enjoyment.