“The Earth is closer to the sun in summer, causing warmer temperatures.”

It's a common and understandable assumption that our planet's proximity to the sun dictates the warmth of our seasons. Many people naturally connect the idea of summer's heat with being closer to that immense heat source, and winter's chill with being further away. This intuitive line of thinking seems logical, especially given that the Earth does indeed travel in an elliptical orbit, meaning its distance from the sun isn't constant throughout the year.

However, the true cause of Earth's seasons lies not in its varying distance from the sun, but in the planet's axial tilt. Our home world is tilted on its axis by approximately 23.5 degrees relative to its orbital plane. As Earth makes its annual journey around the sun, different hemispheres are tilted either towards or away from the sun. When a hemisphere is tilted towards the sun, it receives more direct sunlight, leading to longer days and warmer temperatures, which we experience as summer. Conversely, when it's tilted away, the sunlight is less direct, days are shorter, and temperatures are cooler, bringing winter.

This misconception persists because the idea of distance directly correlating with heat is so ingrained in our everyday experience. While the Earth is actually closest to the sun in early January (during the Northern Hemisphere's winter) and farthest in early July (during the Northern Hemisphere's summer), this difference in distance is minor compared to the profound effect of the axial tilt. The variation in solar energy received due to orbital distance is far less significant than the intensity of sunlight caused by the angle at which it strikes the Earth's surface.