LEGO Technic Earth and Moon in Orbit 42179

The LEGO Technic Earth and Moon in Orbit (42179) is a building set that constructs an interactive orrery. This model uses an integrated gear system to demonstrate the orbital paths of the Earth and Moon in relation to the Sun. By turning a crank, users can actuate the mechanism, causing the Earth to orbit the Sun while the Moon simultaneously orbits the Earth. The finished construction serves as a functional tool that visually represents these celestial mechanics. It is designed to be both an interactive model and a static display piece.

This set provides a hands-on method for exploring basic astronomy concepts. The base of the model features printed details that indicate the months of the year and the phases of the moon, correlating with the positions of the orbiting bodies. The assembly process is characteristic of the LEGO Technic system, emphasizing the construction of functional, interconnected mechanical components. With a total of 526 pieces, the set offers a focused building experience. The model operates entirely through manual input, requiring no batteries for its functions.

• Interactive orrery model of the Earth, Moon, and Sun
• Integrated gear system simulates celestial orbits
• Printed graphics show months of the year and moon phases
• Contains 526 LEGO Technic building pieces
• Constructed from plastic
• Recommended for builders aged 10 and up
• Assembly is required
• Operates manually without batteries