Theia
Theia, also called Euryphaessa "wide-shining", is the Titaness of sight and by extension the goddess who endowed gold, silver and gems with their brilliance and intrinsic value. Her brother/consort is Hyperion, a Titan and god of the sun, and together they are the parents of Helios (the Sun), Selene (the Moon), and Eos (the Dawn). Theia's mythological role as the mother of the Moon goddess Selene is alluded to in the application of the name to a hypothetical planet which, according to the giant impact hypothesis, collided with the Earth, resulting in the Moon's creation.
