昼夜地球
3D地球昼夜变化，晨昏线+城市灯光+太阳角度+地轴倾角可调
About Day-Night Earth
Day-Night Earth is an interactive cosmos & astronomy effect. 3D Earth day-night terminator, city lights, sun angle and axial tilt control Explore accurate orbital mechanics and cosmic phenomena in 3D. The simulation uses real astronomical data and physics-based calculations for scientifically accurate visualizations. This effect runs directly in your browser using HTML5 Canvas, with no downloads or plugins required.
How to Interact
Drag to rotate and explore the 3D space from any angle. Scroll to zoom. Adjust orbital speed, time scale, and viewing parameters to explore different cosmic scenarios and celestial configurations.
Technical Details
Built with Three.js WebGL. Uses accurate orbital mechanics calculations, real-scale planet positioning, and starfield background rendering for immersive space visualization. Includes physically-based lighting models.
Use Cases
Ideal for educational demonstrations, astronomy enthusiasts, science visualizations, or as an impressive 3D space background for creative projects and presentations.