Why Do We Have Seasons?
Earth’s 23.5° tilt is the secret — not distance from the Sun.
visualization
interactive
Jan 29, 2026
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January 29, 2026
Earth’s 23.5° tilt is the secret — not distance from the Sun.
An interactive Three.js visualization showing how Earth’s axial tilt causes seasons. Watch how sunlight hits the Northern and Southern hemispheres differently as you switch between summer, autumn, winter, and spring.
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