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Mercury is the smallest planet in our Solar System since Pluto was downgraded to a dwarf planet, and it is also the closest to the Sun. This makes the development of life on this planet quite difficult, as there are high and low temperatures, climatic instabilities, a weak atmosphere and a dark surface, probably due to the presence of graphite or high temperatures, which "carbonize" the landscapes. Despite this, he is not the hottest (that title belongs to Venus), but the fastest around the Sun. It is possible that the ancient Romans named him after Mercury, who was the swiftest messenger god. Despite the adversities, it is an intriguing planet that draws the attention of astronomers for containing water, both in solid and liquid state (in smaller quantities).
