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.
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