At a quarter the diameter of the Earth, the moon is the fifth largest satellite in the solar system, and the only natural satellite of the Earth. The moon plays a crucial role in the development of our planet as well as the function of our habitat. The moon orbits the Earth about once every 27 days, and the various cycles of our moon form the basis for our monthly lunar calender.
The moon is the only other body in space upon witch man has set foot, the first occurance of which took place in 1969 by American astronaut Neil Armstrong on the Apollo 11 NASA mission.
The moon's cultural significnce cannot be overstated, playing a part in the mythology and folklore of every human society ever recorded.