About this Simulation

This interactive simulation models the Moon's orbital motion around Earth and its changing illumination as seen from our planet. Learners can adjust viewing angles and orbital positions to observe how the Moon's phase changes throughout its monthly cycle, connecting gravitational mechanics with observable celestial phenomena.

Learning objectives: Understand the geometric relationship between Earth, Moon, and Sun that produces lunar phases | Visualise how the Moon's orbital position determines its illuminated appearance | Apply knowledge of gravitation to explain natural satellite motion and lunar cycles