Tethys

In Greek mythology, one of the Titans; a daughter of Uranus and Gaia; and the wife of the sea god Oceanus, by whom she was the mother of over three thousand children: the river gods, oceanids (nymphs of the open sea), and the waves.

She became the teacher of Hera, goddess of women and marriage.

The name Tethys was given to the third satellite of the planet Saturn.

Tethys

One of the larger moons of Saturn, discovered in 1684 by the Italian-born French astronomer Giovanni Cassini. It has a diameter of 1,060 km/659 mi and orbits Saturn at an average distance of 295,000 km/183,000 mi with a period (time taken to circle the planet) of 1.89 days. Tethys is heavily cratered, with a notable 400-km/249-mi crater called Odysseus. A 2,000-km/1,243-mi complex of valleys called Ithaca Chasma stretches three-quarters of the way around the moon and may be a crack caused by the same impact that produced Odysseus. Tethys is in the same orbit as two smaller moons, Telesto and Calypso, each about 20-30 km/12-19 mi in size.