I was watching a BBC documentary on space last night. It was talking about gravity, and it said that the reason we only ever see one side of the moon, is because the earths gravity is strong enough to actually stretch the moon into a longer shape, creating a 7m bulge on the moon.
This bulge travelled around the moon. It was described on the documentary as something along the lines of, if you were there, you would see the ground make a 7m high wave as it rotated. The bulge then acted a brake, and the moons spin slowly ground to a halt until where we are today when it's spin is very very slow so it looks like we only see one side.
So where is this giant death bulge tidal wave on earth? Shouldn't we been seeing the ground rising up a few meters in relation to the suns position, demolishing and killing everything in its path?
I assume the documentary grossly simplified what actually happened, or I misunderstood! I'm a physics noob, please go easy on me, chances are I'm not going to understand any formulas that use anything but addition or subtraction.