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Mercury is the closest planet to the Sun.
The temperature on the side of the planet facing the Sun is as high as 430°C.The shaded side of Mercury which faces away from the Sun is bitterly cold at -180°C.

Mercury has almost no atmosphere because it has been burned off by the Sun.

The planet consists of bare rock, pitted and scarred by the impact of meteorites. It has extremely steep cliffs that are hundreds of kilometers long. These were formed when the planet cooled from its original m read more...

Tags: mercury, sun, atmosphere

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