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BookmarkThe Moon is Earth's only natural satellite.
The average distance from the Earth to the Moon is 384,399 kilometres (238,854 mi), which is about 30 times the diameter of the Earth.
At this distance, it takes sunlight reflected from the lunar surface approximately 1.3 seconds to reach Earth.
The Moon's diameter is 3,474 kilometres (2,159 mi), which is about 3.7 times smaller than the Earth, making it the Solar System's fifth largest moon, both by diameter and mass, ranking behind Ganymede, Titan, Callisto, and Io..
For more information about the topic Moon, read the full article at Wikipedia.org, or see the following related articles:
Geosynchronous orbit — A geosynchronous orbit is a geocentric orbit that has the same orbital period as the sidereal rotation period of the Earth. It has a semi-major axis ... > read more
Deimos (moon) — Deimos is probably an asteroid that was perturbed by Jupiter into an orbit that allowed it to be captured by Mars, though this hypothesis is still in ... > read more
Phobos (moon) — Phobos is the larger and innermost of Mars' two moons, and is named after Phobos, son of Ares (Mars) from Greek Mythology. Phobos orbits closer to a ... > read more
Precession — Precession refers to a change in the direction of the axis of a rotating object. In certain contexts, "precession" may refer to the precession that ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Moon at Wikipedia.org. See the Wikipedia copyright page for more details.
