Question

Why do we see only one side of moon,not the other side?

Answer 1

Tjis Question is similar to the question - Why we can see only one side of the head and not the other!
Scientifically, we can only see the moon when the light from the sun is reflected by the moon! Hence the Reason

Answer 2

One side of the moon always faces Earth because of what's called synchronous rotation. That is, the moon rotates, or spins on its axis, in the same length of time it takes to orbit Earth. ... For that reason, our moon always has one side facing Earth, which we call the moon's near side.

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