It takes the moon 27.3 days to make one revolution around the Earth, traveling at a speed of 2,300 miles per hour. The moon takes the same amount of time to make a full rotation on its axis, according to Windows to the Universe.
Only one face of the moon ever faces the Earth; the other side can only be seen from a spacecraft. The moon is Earth's only natural satellite and was formed about 4.6 billion years ago. Its diameter is 2,160 miles, and it is located 238,900 miles away from the Earth. The rise and fall of tidal waves is a result of the moon's gravitational pull on the Earth.