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Look-wise, Mercury is compared to the moon. It has a dry surface that is covered with large craters, which can be up to 25 miles wide.
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Mercury was formed at the same time the solar system was born, which means it is about 5 billion years old. Some estimates say the sun and the planets will be around for another 5
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Mercury was the swift-footed god in Roman mythology. Because the planet seemed to orbit the Sun much faster than the other planets, the Romans named it Mercury in honor of their god
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Mercury is the smallest planet in the Solar System, and also the closest one to the Sun. Mercury's surface is very similar to that of the Moon, and it has many impact craters. One
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