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In astronomy

The planet Saturn is named for the Roman equivalent of the Titan Cronus. Saturn's largest moon, Titan, is named after the Titans generally, and the other moons of Saturn are named after individual Titans, specifically Tethys, Phoebe, Rhea, Hyperion, and Iapetus. Astronomer William Henry Pickering claimed to have discovered another moon of Saturn which he named Themis, but this discovery was never confirmed, and the name Themis was given to an asteroid, 24 Themis. Asteroid 57 Mnemosyne was also named for the Titan.

A proto-planet Theia is hypothesized to have been involved in a collision in the early solar system, forming the Earth's moon.