# Relation between the period of rotation and the period of revolution of a satellite

I read somewhere that the tidal forces between the earth and the moon causes the equality between the 2 periods of the moon and that every planet-satellite system will evolve to this condition (like pluto-charon of you consider pluto a planet). Can somebody give me some references (books, articles) discussing this idea and why doesn't this happen in a star-planet system?

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Yeah Ben, I read it before but I was looking for something more technical more detailed like a book on such topic maybe using Hamiltonian dynamics or the Lagrangian formalism. –  metacompactness Jun 15 '13 at 9:30
"why doesn't this happen in a star-planet system": You know, Mercury is in a 3:2 resonance with the Sun. –  Chris White Jul 2 '13 at 21:48