#20 The Dark Side Of The Moon
A very popular belief that goes around into many pop-culture creations (such as music, movies, etc.) is that there exists a dark side of the Moon that we never get to see. In truth, there is no dark side of the moon, but a “far side” that we never get to see due to the phenomenon known as tidal locking.
Since the Earth and the Moon have been locked in a dance of gravitational pull, the Moon has altered its rotation and revolution to reach a point of balance where its time for completing a rotation is the same as its time for completing a revolution around Earth. This means that we only see the same portion of the Moon every time we look up.