* Lack of atmosphere: Mercury has a very thin atmosphere, practically a vacuum. This means there's no significant insulation to trap heat during the day or prevent it from escaping at night.
* Slow rotation: Mercury rotates very slowly on its axis, taking 59 Earth days to complete one rotation. This means that one side of the planet faces the Sun for a very long time, leading to intense heating, while the other side remains in darkness for an equally long period, allowing it to cool down drastically.
* High solar radiation: Being the closest planet to the Sun, Mercury receives a much higher amount of solar radiation compared to Earth. This intense solar radiation contributes to the scorching daytime temperatures.
These factors result in a temperature swing of over 1,000 degrees Fahrenheit (570 degrees Celsius) between the hottest point on the sunlit side and the coldest point on the dark side.
