Theia is a Titan in Greek mythology. She is the titan of sight. Her parents are Gaia and Uranos. With her brother Hyperion her children are Helios, Selene, and Eos. She was also considered the moons eyes because Selene was her daughter and Selene was the titan of the moon.
-  Traces of another world found on the Moon. Pallah Ghosh. 5 June 2014.