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| Diameter | 3475.6 kilometres |
The Moon is Earth's nearest neighbour in space, its only natural satellite, and the only place other than Earth to be stepped on by human beings. It is the second brightest object in the sky after the Sun and is bigger than dwarf planet Pluto. Its Roman name is Luna and Greek name is Selene. One side of the Moon always faces Earth, so you never get to see "the dark side of the Moon". |
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| Average distance from Earth: | 384,400 kilometres | ||
| Time taken to orbit Earth: | 27 days (27.321 days) | ||
| Time taken to turn on axis: | 27 days | ||
| 0.16 (one-sixth of Earth's) | |||
| Surface gravity (Earth equals 1): | |||
| Atmosphere: | None | ||
| Surface temperature: | From 100°c to -150°c | ||
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