Major MoonMoon of Earth
Moon
Earth's only natural satellite and the fifth-largest moon in the solar system.
3,474.8km
Diameter384,400km
From Earth27.3days
Orbital PeriodAbout
The Moon is Earth's only natural satellite and the fifth-largest moon in the solar system. It is the largest relative to its host planet, with a diameter about one-quarter that of Earth. The Moon's gravitational influence produces Earth's tides and stabilizes its axial tilt.
Properties
3,474.8km
Diameter384,400km
Semi-major Axis27.32days
Orbital Period7.342e22kg
Mass3.34g/cm³
DensityYes
Tidally LockedNotable Facts
01
The Moon is the only celestial body beyond Earth where humans have set foot
02
It is gradually moving away from Earth at a rate of about 3.8 cm per year
03
The same side of the Moon always faces Earth due to tidal locking
04
The Moon has no atmosphere, so footprints left by astronauts will last millions of years