Moon
CategoryMoon of Earth
SystemSolar System
Diameter3475 km
Orbital Period27.3 days
About Moon
The fifth largest moon in the solar system. Tidally locked, always showing the same face to Earth. The average distance is 384,400 km. Formed from debris after a Mars-sized object hit early Earth. Has quakes called moonquakes. 12 humans have walked on its surface. Moving away from Earth at 3.8 cm per year.