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Why do you think the temperature on Mercury's dark side is so cold even though it's close to the sun?
Wiki User
∙ 14y ago
Once it was thought that Mercury does not rotate. We now know that Mercury does rotate, and it takes 58.6 of our days to make one revolution. So in answer to your question every part of Mercury gets very cold and also very hot. The temperature on the surface ranges from -170o C to 430oC (-270oF to 800oF) And the side that faces away from the Sun gets so cold because there is no atmosphere on Mercury to retain the heat. It is facing space, the heat that it absorbed while facing the Sun radiates away, and as space is cold so the surface gets cold.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoWhy is it cooler to sit behind an umbrella on the beach one a Sunny day as apposed to sitting in the sun light? The same reason the back side of Mercury is cooler, it's not in the direct radiant energy of the sun so it's cooler.
Wiki User
∙ 12y agoIt can actually drop to -147°C, Weird because its the closest to the sun...
Wiki User
∙ 14y agoIt is cold because of the lack of atmosphere. The sunlight cannot reach the dark side of Mercury, and there is not enough of an atmosphere to hold it the heat.
Wiki User
∙ 12y agoThe surface temperature on Mercury can drop to 100K (-173'C) when away from the sun - even colder at the poles (80K).
Wiki User
∙ 11y agoit can be 102 degrees celcious
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