Mercury: The Closest Planet to the Sun - Facts & Information

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Mercury: The Closest Planet to the Sun - Facts & Information

The planet closest to the Sun is Mercury. It is the smallest and innermost planet in the Solar System. Mercury orbits the Sun every 88 Earth days and is the densest planet in the Solar System. It is also the most heavily cratered planet in the Solar System, and its surface is scorched by the Sun.

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