The Earth's orbit is not perfectly circular, it's slightly elliptical. This means that Earth's distance from the Sun varies throughout the year. When Earth is closest to the Sun, it's called perihelion, and when it's furthest away, it's called aphelion.

While it's true that the Earth is closer to the sun during perihelion, it doesn't cause a significant change in Earth's seasons. Here's why:

* Seasons are caused by the tilt of Earth's axis, not by its distance from the sun. The Earth's axis is tilted at 23.5 degrees, and this tilt causes different parts of the planet to receive varying amounts of sunlight throughout the year.

* Perihelion occurs during the Northern Hemisphere's winter. While you might think that being closer to the sun would make it warmer, the tilt of Earth's axis means the Northern Hemisphere is actually tilted away from the sun at this time, causing winter.

The slightly increased solar radiation received during perihelion is not strong enough to counteract the effects of the Earth's axial tilt.

Therefore, moving closer to the sun during perihelion doesn't directly cause any significant changes on Earth, like the change in seasons.