text: why only one side of the moon is seen? please think logically and make some simple mathematical calculations before you answer; and  consider that if the moon really rotates, all its sides should be seen on a regular basis, as well as different sides of the moon should be seen from different parts of the earth and throughout the different seasons and hours of the day. oh i for sure know the common explanation that the moon rotates the same speed as it orbits the earth but such a coinscidence is about 1:10.000.000 to happen assuming that there are millions of planets and satellites in our universe, and they each have their own unique speed. very, very strange indeed. by the way,what is on the other side of sun.