abstract:Tidal locking (or captured rotation) occurs when the gravitational gradient makes one side of an astronomical body always face another, an effect known as synchronous rotation. For example, the same side of the Earth's Moon always faces the Earth.
Since the Moonalwayspresents the same face to Earth as the result of "tidallocking", directcommunicationlinks withdeviceson the lunarsurfacecan bemaintainedcontinuously.