For questions about the gravitational interaction between astronomical bodies. This tag often describes water currents, but can also be applied to planetary phenomena such as tidal locking and tidal heating.
The tides tag includes but is not limited to the influence of an astronomical body on an ocean or other body of water.
It may also describe other fluids and their interactions, tidal locking, tidal heating, and other large-scale planetary phenomena related to orbital-mechanics and gravity.
The environment and moons tags may also be relevant.
