Mercury, the planet nearest the Sun, is also the smallest planet in the Solar System. Only slightly larger than the Earth's moon, Mercury's surface is covered with craters. This tiny planet does not have any rings or moons.   Interior & Surface Atmosphere Magnetosphere Mercury's Poles Planetary Facts Myth & Culture Discover Mercury Latest News From Mercury Space Missions Image Archives Mercury's Web

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Last modified July 8, 2010 by Randy Russell.

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