* Axial Tilt: Mercury's axis is tilted at a very small angle (about 0.034 degrees) compared to Earth's (23.5 degrees). This tiny tilt means that Mercury's poles don't experience significant changes in the amount of sunlight they receive throughout the year.
* Orbit: Mercury has a highly elliptical orbit around the Sun, which means the distance between Mercury and the Sun varies significantly. While this variation does cause changes in temperature, it doesn't result in the kind of seasonal changes we experience on Earth.
Instead of seasons, Mercury experiences extreme temperature variations:
* Dayside: Mercury's dayside temperatures can reach scorching highs of 800 degrees Fahrenheit (430 degrees Celsius) due to its proximity to the Sun.
* Nightside: On the night side, temperatures plummet to a frigid -290 degrees Fahrenheit (-180 degrees Celsius) due to the lack of atmosphere to retain heat.
So, while Mercury experiences significant temperature swings, it doesn't have the kind of seasonal changes we see on Earth.