Tidal locking is a physical phenomenon occurring in orbiting bodies where the rate of rotation of one celestial object becomes synchronized with the rate of its orbital period around a larger primary object. This gravitational interaction causes the primary body to slow its rotation until one face consistently points toward the second. The mechanism involves the differential gravitational forces, which create tidal bulges on the orbiting body. The resulting torque acts as a brake, dissipating rotational energy and gradually enforcing rotational and orbital periodicity equality. This process is fundamental to understanding the stable orbital dynamics of many moons and exoplanets, leading to predictable thermal and gravitational alignments.