The moon rotates counterclockwise due to the direction of its formation and the conservation of angular momentum in the protoplanetary disk from which it originated. As the moon formed from debris left after a massive collision between the Earth and a Mars-sized body, it inherited the rotational direction of the surrounding material. This counterclockwise rotation is also consistent with the rotation of the Earth and most other bodies in the solar system. As a result, the moon displays a synchronous rotation, always showing the same face to Earth.
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