It takes 27 days for the moon to spin completely and the exact same time for it to orbit around earth, thus creating a situation where we can always only see the same side of the moon.
Surely, this synchronization is not a coincidence but how exactly did we reach that point? I read some articles but found them vague.
In: Planetary Science
Imagine the Earth and the moon are perfect spheres, now put one big mountain on each. Those two mountains are going to attract each other, so eventually they will line up to each other. Same thing on the real Earth and moon, just with a more complicated surface.
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