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Why do seasons change?

🔬 Science · updated 4 weeks ago · 2 min read
Why do seasons change?
Short answerSeasons change because Earth is tilted, so each hemisphere gets different angles and lengths of sunlight during the year.

Seasons are mainly about tilt, not distance. Earth’s axis leans about 23.5 degrees, so as the planet orbits the Sun, each hemisphere takes turns leaning toward or away from the sunlight.

When your hemisphere leans toward the Sun, days are longer and the light is more direct, which gives you summer. When it leans away, the Sun sits lower in the sky and winter follows.

So the short answer is geometry, not drama. Earth keeps its tilt while it goes around the Sun, and that is enough to build the year’s temperature pattern.

Sources

NASA Science - Atmospheric Optics

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