posted on Mar, 25 2011 @ 01:31 PM
reply to post by MasonicFantom
As Griffo replied above, the reason the Moon always shows one face to the Earth is NOT
a mystery, and is in fact a well-understood and normal
effect of orbital mechanics called tidal locking.
It all has to do with the size of a body relative to how close it orbits its parent body. The closer a moon is to its parent, the more likely it is
that it would be tidally locked.
There are more than 30 moons in the solar system that do this. Jupiter has 8 moons that are like this, including its four famous "Galilean Moons"
(Io, Europa, Ganymede, and Callisto). Saturn has 15 moons that act this way, including Titan and Enceladus. Uranus and Mars have moons like this.
Pluto and its moon Charon BOTH always keep one face toward each other. There are exoplanets around other stars that seemingly keep only one face
toward its star at all times.
All of these bodies, just like our Moon, rotate only once per revolution around its parent. It is completely normal.
edit on 3/25/2011 by Soylent Green Is People because: (no reason given)