The text explains that the far side of the moon is never visible from Earth due to a tidal force effect caused by the Earth. This results in a phenomenon called "tidal locking," where the moon's rotation is synchronized with its orbit around the Earth. This means that one side of the moon is always facing the Earth, and scientists refer to this as "bound rotation." This rotation is caused by the stronger gravitational forces of the Earth slowing down the smaller moon's rotation. This phenomenon is common among moons in the solar system. The moon's rotation and orbit around the Earth both take approximately 27 days. Despite this, the concept of "tidal locking" has no significance astronomically because both sides of the moon receive an equal amount of light. The Earth's fast rotation also minimizes the moon's influence, yet the moon still causes tides and slightly slows down the Earth's rotation. This results in longer days on Earth.