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| Diameter | 4,878 km / 3,031 miles |
Mercury is the closest planet to the Sun and has the most cratered surface of any planet in the Solar System. Mercury's surface also appears to have shockwaves from a meteor impact. There are two moons in the Solar System bigger than Mercury - Ganymede which orbits Jupiter and Titan which orbits Saturn. In Roman mythology, Mercury was the god of commerce, travel and thievery. Its Greek name is Hermes, who was the messenger to the Gods. |
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| Average distance from the Sun | 57,900,000 km | ||
| Time taken to orbit the Sun | 88 days | ||
| Time taken to turn on axis | 59 days | ||
| 0.38 | |||
| Surface gravity (Earth equals 1) | |||
| Atmosphere | None | ||
| Surface temperature | 350°c max -170°c min | ||
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