Mercury is a telluric planet of the solar system, the innermost and smallest (4879 km at its equator) of all eight planets known to orbit the Sun; accordingly, Mercury only takes 88 days to complete one revolution around our star.

The planet's surface is, just like Moon's, heavily covered with craters, as a result of it's lack of a real atmosphere and of an active geology that would periodically renew parts of the surface's aspect.

The solar system
The Sun, Mercury, Venus, The Earth, Mars, Ceres, Main asteroid belt, Jupiter, Saturn, Uranus, Neptune, Pluto, Eris, Kuiper belt, scattered disc, Oort cloud
Asteroids, Centaurs, Comets, Meteoroids, Trans-Neptunian objects
Natural satellites of the solar system

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