Comment Re:Dark != Far (Score 3, Insightful) 79
...the rotation of the moon just about exactly matches the revolution around the Earth
I think we can say exactly, as it's not a coincidence that the rotations align like that, it's a stable configuration of two bodies in orbit
Yes but there's still libration. Although the Moon's rotation and revolution periods are indeed exactly the same, its orbital speed changes slightly over each orbit. So "just about exactly" is justified too.