Moon

The Moon is Earth's only natural satellite and orbits at an average distance of 384,399 kilometers. Tidal locking keeps the same near side facing Earth, while libration makes about 59% of its surface visible. It is a differentiated, terrestrial planetary-mass body with a cratered, regolith-covered surface and dark basalt plains called maria. The Moon is the brightest celestial object in Earth's night sky and the only body beyond Earth visited by humans.

Average distance from Earth

384,399 kilometers (238,854 mi)

Diameter

3,474 km (2,159 mi)

Human visits

The only celestial body beyond Earth visited by humans