Here's why:
* No atmosphere: Mercury has a very thin atmosphere, which means there is very little to trap heat or regulate temperatures.
* Close to the sun: Being the closest planet to the sun, Mercury receives intense solar radiation.
* Slow rotation: Mercury rotates very slowly, resulting in extremely long days and nights. This means that the sun-facing side gets extremely hot, while the opposite side freezes.
Temperatures on Mercury can range from:
* Daytime: 430°C (800°F)
* Nighttime: -180°C (-290°F)
This difference of over 600°C (1100°F) makes Mercury the planet with the most extreme temperature variations in our solar system.
