In Greek mythology, Theia (also written Thea or Thia) was a Titan. With her brother and husband Hyperion, she was the mother of Selene, Eos and Helios.
In astrophysics, Theia is the name of a hypothetical small planet that, according to one theory of the Moon's formation, collided with the Earth over four billion years ago. This impact destroyed Theia and threw massive quantities of ejecta into orbit around Earth, from which the Moon coalesced in a matter of months or days. Earth also gained significant amounts of angular momentum from the collision, as well as increasing its total mass to its modern level. See Giant impact theory.
According to this theory, Theia would have been approximately Mars-sized and struck Earth at a glancing angle. Little else is known about it. It was named after the mythological Greek Titan Theia, who gave birth to the Moon goddess Selene.
Theia can also be a king of the Ostrogoths. See Teia
Common misspelling and questions (FAQ)
heia teia thia thea thei hteia tehia thiea theai thei ttheia thheia theeia theiia theiaa 5heia rheia fheia 6heia gheia 6heia yheia gheia tyeia tgeia tbeia tueia tneia tueia tjeia tneia th3ia thwia thsia th4ia thdia th4ia thria thdia the8a theua theja the9a theka the9a theoa theka theiq theiw theiz theiw theis theiz theya thiea yheia tyheia theiasExcept that from the catalogue of sins But by dissevering their nativity. Upon one stem, which the same beams and showers Which the same hand will gather--the same clime All those who love--and who e'er loved like thee, _20 Within whose bosom and whose brain now glow The very idol of its portraiture. But thou art as a planet sphered above; Of his subjected spirit: such emotion Had not brought forth this morn--your wedding-day. _30 ... 'Lie there; sleep awhile in your own dew, Fiordispina said, and threw the flowers They seemed to wear a beauty from the eye Whose warmth ... checked their life; a light such The childish pity that she felt for them, She had divided such fair shapes ... made Of gentle beauty on the flowers: there lay _45 ... rods of myrtle-buds and lemon-blooms, The livery of unremembered snow-- Upon the steps of the high portico, She flings her glowing arm ... ... step by step and stair by stair, _55 More like a trunk by lichens overgrown And ever as she goes the palsied woman ... 'How slow and painfully you seem to walk, _60 .