Why is the moon face always same from the earth? (Why doesn't the moon face change from the earth?) I think that face density is heavier than other face.
by 
Ye Tun
ANSWERS: 1
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The moon has become tidally locked because it is not quite a perfect sphere: it is a tiny bit oval in the equatorial plane. This causes a force which, over a very long time, aligns the long axis of the oval with the earth-moon vector. It is still very gently "rocking" in place, so we can see slightly more than half of the surface.
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