Euryphaessa

Theia
Titaness of sight and the shining light of the clear blue sky
Member of the Titans
In the frieze of the Great Altar of Pergamon (Berlin), the goddess who fights at Helios' back is conjectured to be Theia
Other names	Euryphaessa, Aethra (probably)
Abode	Sky and River Oceanus
Personal Information
Consort	Hyperion
Offspring	Helios, Selene, Eos
Parents	Gaia and Uranus
Siblings	Titans Crius Cronus Coeus Hyperion Iapetus Mnemosyne Oceanus Phoebe Rhea Tethys Themis Hekatonkheires Briareos Cottus Gyges Cyclops Arges Brontes Steropes Other siblings Gigantes Erinyes (the Furies) Meliae Half-siblings Aphrodite Typhon Python Uranus

In Greek mythology, Theia (English pronunciation: /ˈθiːə/; Ancient Greek: Θεία Theía, sometimes rendered Thea, Théa or Thia), also called Euryphaessa "wide-shining", is a Titaness. 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).

The name Theia alone means simply "goddess" or "divine"; Theia Euryphaessa (Θεία Εὐρυφάεσσα) brings overtones of extent (εὐρύς, eurys, "wide", root: εὐρυ-/εὐρε-) and brightness (φάος, phaos, "light", root: φαεσ-).

Hesiod's Theogony gives her an equally primal origin, said to be the eldest daughter of Gaia (Earth) and Uranus (Sky).Robert Graves also relates that later Theia is referred to as the cow-eyed Euryphaessa who gave birth to Helios in myths dating to Classical Antiquity.

Once paired in later myths with her Titan brother Hyperion as her husband, "mild-eyed Euryphaessa, the far-shining one" of the Homeric Hymn to Helios, was said to be the mother of Helios (the Sun), Selene (the Moon), and Eos (the Dawn).