The usual English proper name for Earth's natural satellite is simply Moon, with a capital M. The noun moon is derived from Old English mōna, which (like all its Germanic cognates) stems from Proto-Germanic *mēnōn, … See more

The Moon is a very slightly scalene ellipsoid due to tidal stretching, with its long axis displaced 30° from facing the Earth, due to gravitational anomalies from impact basins. Its shape is … See more

Pre-telescopic observation (before 1609)
It is believed by some that 20–30,000 year old tally sticks were used to observe the phases of the Moon, … See more

Lunar geologic timescale
The lunar geological periods are named after their characteristic features, from most impact craters outside the dark mare, to the mare and later craters, and finally the young, still bright and therefore readily visible craters with See more

Orbit
The Earth and the Moon form the Earth-Moon satellite system with a shared center of mass, or See more

The Moon's highest altitude at culmination varies by its lunar phase, or more correctly its orbital position, and time of the year, or more correctly the … See more

Humans last landed on the Moon during the Apollo Program, a series of crewed exploration missions carried out from 1969 to 1972. See more