Art Asteroid astrophysics display that models planetary motion for clear, handson learning Key benefits Visualizes planetary motion to build a concrete understanding of orbital mechanics and related concepts Realistic movement sparks curiosity and supports guided learning for children and adults Dual power options allow flexible placement: USB power or 4 AA batteries (batteries not included) Durable construction designed for regular use on desks, in classrooms, or on display Features and materials Item type: Art Asteroid astrophysics display Materials: iron frame and plastic components with steel balls for moving parts Size: approximately 21.8 x 10.5 x 24 cm (8.6 x 4.1 x 9.4 in). Small measurement variations may occur Power: USB cable included. Can also run on 4 AA batteries (not included) Function: accurate moving model that demonstrates relative motion of orbiting bodies while serving as an educational display Why this product is useful Makes abstract astronomy concepts tangible by showing motion patterns and relationships between rotating elements Compact size and battery option let you place the model anywhere a demonstration or decoration is needed Solid materials and simple mechanics reduce the need for frequent maintenance Practical use scenarios Classroom demonstration: use as a visual aid during lessons to explain orbital motion, rotation, and axial tilt Study desk or home display: provides an educational decorative piece that encourages exploration and study Gift for learners or hobbyists: suitable for students, teachers, and astronomy enthusiasts who appreciate handson models Package contents 1 x Base 2 x Bracket 2 x Half circle coil 1 x Axes ball 1 x Round frame 1 x USB cable Additional notes Batteries are not included. Requires 4 AA batteries when used without the USB cable Suitable as a gift or desk decoration and designed for repeated use in learning and display settings