Question

Why does the same side of the moon always face earth

Answer 1

A tidally locked body in synchronous rotation (the moon) takes just as long to rotate around its own axis as it does to revolve around its partner (the earth). In other words, the moon spins on its axis at the same rate it orbits the earth.

Answer 2

The Moon takes exactly the same to rotate on its axis than to orbit around the Earth, a period of just over 27 days; That is why we always see the same lunar hemisphere.

Step-by-step explanation:

It is a phenomenon called gravitational coupling.

If you try to surround a tree while keeping your face towards it, when you complete the turn, you will have turned on yourself 360º.