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🌙 Moon Phases — Sun-Earth-Moon Orbit Diagram (2D)

A 2D top-down orbit diagram paired with a live Earth-view phase disc. Drag the Moon around its orbit or scrub the day slider and watch the real Sun-Earth-Moon geometry produce all 8 lunar phases.

Space Explorers2DEasy60 FPS📱 Mobile-adapted⇄ 3D version

⚙ Under the hood

A 2D top-down orbit diagram paired with a live Earth-view phase disc. Drag the Moon around its orbit or scrub the day slider, and the same Sun-Earth-Moon angle geometry used by the 3D original computes the exact illuminated fraction for all 8 lunar phases.

astronomymoon phasesorbit diagramkidsspacegeometry

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install