![]() Mercury also has a very thin atmosphere and no known magnetic field. Some of the largest craters on Mercury are named after famous artists, such as the Salvador Dali crater. These craters were formed by comet and asteroid impacts that happened early in the solar system’s history. So if you were to live on Mercury, your birthday would come around more than three times a year!Īnother interesting thing about Mercury is that it has a heavily cratered surface, much like the Moon. One day on Mercury (the time it takes for it to rotate once) is actually about 176 Earth days long! And one year on Mercury (the time it takes for it to orbit the Sun) is only about 88 Earth days. Mercury also has some unique features, like its extremely long day and year. That’s because it’s made mostly of heavy elements like iron and silicon. Did you know that it’s the smallest planet in our solar system? It’s only about a third the size of Earth! But even though it’s small, it’s still pretty dense. ![]()
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