Why do we always see the same side of the moon? Comment

NASA/GSFC/LRO/Arizona State University

I found an interesting article I would like to share with you.

For starters, the moon is not stuck in place with one side facing us. Our lunar companion rotates while it orbits Earth. It’s just that the amount of time it takes the moon to complete a revolution on its axis is the same it takes to circle our planet — about 27 days. As a result, the same lunar hemisphere always faces Earth. How’d this come to be? In a word: gravity. The moon’s gravity slightly warps our planet’s shape and gives us tides. Likewise, Earth tugs at the moon, creating a rocky, high-tide “bulge” facing us. That bulge ended up working like a brake, slowing the moon’s spin down to the current rate, so the lunar high tide permanently faces us. When that happened, about 4 billion years ago, the moon became “tidally locked,” and it has presented us the same visage ever since.[1]

This is a really short article about our moon, which tries to explain how it's possible that we only see one side of it. Something that comes to mind: If the moon spins, and is affected by our earths gravity, it somehow looses a hell lot of energy because of deformation. I would be quite interested if someone really tried to do the math to this problem. 

What are your thoughts on this topic? I'm curious what you think about this explanation.

See ya!

[1] Adam Hadhazy, 10.30.14,Why Do We Always See the Same Side of the Moon?, http://discovermagazine.com/2014/dec/2-ask-discover