Tidal heating refers to the process by which energy is generated within a celestial body due to gravitational interactions between that body and its satellite. This occurs when the gravitational pull of the moon or another large object causes friction within the planet, leading to an increase in temperature and heat. Tidal heating can also occur on Earth, where the gravitational forces from the Moon cause changes in ocean tides and currents, which generate heat through friction as water moves against the bottom of the sea floor.