This threesphere astronomical science instrument makes celestial mechanics clear and approachable through a handson sun earth and moon orbital model and a builtin lunar simulator. It combines practical demonstration, realistic motion, and an attractive appearance to support learning, teaching, and display. Key benefits Makes abstract concepts tangible: Visualize the relative positions and motions of the sun, earth, and moon to understand lunar eclipses and orbital relationships. Ideal for learners who benefit from kinesthetic and visual models. Improves comprehension quickly: Demonstrations with moving spheres clarify why eclipses occur and how lunar phases relate to positions in orbit, reducing confusion compared to static diagrams. Engaging and reliable: The interactive build and adjustable model invite exploration and repeated use, helping students retain concepts through active participation. Decorative and functional: The model doubles as a classroom display or a thoughtful educational gift that complements learning spaces. What this product does Demonstrates the movements of the sun, earth, and moon in a threesphere arrangement. Simulates lunar eclipses by aligning the spheres to show shadowing and relative positioning. Allows handson assembly and manipulation so users can recreate or alter orbital scenarios for study. Important attributes Function: Educational demonstration of orbital motion and lunar eclipses using a threesphere and lunar simulator design. Compatibility: Suitable for classroom lessons, science clubs, university labs, homeschooling, and amateur astronomy study sessions. Size and placement: Designed for tabletop use in classrooms and home study areas; compact enough for regular handling and display. Materials and build: Constructed from durable components for frequent demonstration and handling; engineered for smooth motion during simulation. Performance: Accurate relative motion and alignment capabilities that support clear, repeatable demonstrations of eclipse geometry and orbital relationships. Practical use scenarios Classroom demonstration: An instructor assembles the model in front of a class to show how a lunar eclipse forms, then lets students replicate the alignment to confirm their understanding. Homework and study aid: A student uses the model at home to visualize the sequence of lunar phases and test different positions, reinforcing concepts from lecture notes. Science club or outreach event: Facilitators use the model as an interactive station where visitors can manipulate the spheres and see eclipse conditions in real time. Why choose this instrument Designed specifically to reduce conceptual barriers when teaching or learning about orbital mechanics. Encourages active learning through assembly and interaction, offering a more memorable experience than static images. Works well in multiple educational environments and serves as both a teaching tool and an attractive educational display. Contents and user guidance Includes parts to assemble a sun earth and moon orbital model and a lunar simulation mechanism. Simple assembly and manual manipulation make it suitable for guided classroom use or individual study. Recommended use under supervision for younger students and with guided instruction to maximize learning outcomes.