Though Mercury is The Nearest To the Sun, it is not The Hottest Planet

Scientists estimate what they believe the temperature would be because we don't have as many tools and thermometers to monitor the temperature on other worlds. Numerous aspects need to be taken into account, such as the planet's atmosphere and distance from the Sun.

You might assume that Mercury is the hottest planet because it is the one that is nearest to the sun. But one of the interesting facts about Mercury is the side of Mercury that faces away from the sun is usually quite chilly since it doesn't have an atmosphere like Earth's that can trap and hold heat. This is especially true because Mercury rotates slowly and takes around 59 Earth days to do so. According to NASA, temperatures on the surface of Mercury may still rise to a scorching 800 degrees Fahrenheit (427 degrees Celsius) during the day and as cold as minus 290 F (minus 179 C) during the night.

Due to its rich atmosphere, Venus, the second planet from the sun, is the planet with the highest surface temperature. According to a recent article by Live Science, the surface of Venus is roughly 860 degrees Fahrenheit (462 degrees Celsius) hot all the time.