Earth's sole natural satellite, the moon, has a circumference of 6,783.5 miles around its equator. Its surface area is 14,647,439.75 square miles, which is approximately 0.07 times that of the Earth.
Comparing the size of the sun, moon and Earth by scale, think of the sun as a door, the Earth as a nickel and its moon as a green pea. The moon's circumference is about 0.71 that of the smallest planet in the solar system, Mercury, and its surface area is slightly more than half that of Mercury. The moon is, on average, 238,857 miles from Earth. It has a rocky terrain with many craters and pits on the surface, a thin atmosphere and no water.