An interactive digital armillary sphere (渾象) — visualizing the celestial sphere, the 28 Chinese lunar mansions, and axial precession across ±3000 years. Built with Three.js and astronomy-engine.
astronomy data-visualization precession archaeoastronomy astronomy-engine star-map celestial-sphere armillary-sphere chinese-astronomy lunar-mansions
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Updated
Jul 14, 2026 - TypeScript