Question

Does the moon rotate on its axis like planet earth? Why or why not?

Answer 1

Moon rotates on its axis once in 27 days and 8 hours.

Explanation:

Moon also go round the Earth in same 27 days 8 hours.So we see only one face of Moon.This is called tidal locking.

Answer 2

While showing nearly the same face to the Earth, Moon spins for its day and night. As of now, average Moon's day is 29.530587891 Earth days.

Explanation:

Here, the period between two consecutive Full Moon's transits (or New Moon's transits) of the Earth's heliocentric ( revolving-about-Sun ) longitutudinal plane determines lunar day.
In brief, it is synodic (defined with respect [the Sun]) lunar month, (http://socratic.org/astronomy/our-solar-system/the-sun-1)-Earth line.
Moon spins through 2`pi` radians, with respect to the Sun, during this period.