Proper noun
(Greek mythology) A Titan, the sister-wife of Hyperion.
(Greek mythology) An Oceanid nymph (daughter of Oceanus and Tethys), the mother of the Cercopes by Oceanus.
(astronomy) A hypothesised Mars-sized planet of the early solar system thought to have collided with the Earth to produce the Moon.
Source: en.wiktionary.orgAccording to research on the subject that is based on new simulations at the University of Bern by physicist Andreas Reufer and his colleagues, Theia collided directly with Earth instead of barely swiping it. Source: Internet
Descendants of the Titans The Titans, Oceanus, Hyperion, Coeus, and Cronus married their sisters Tethys, Theia, Phoebe and Rhea, and Crius married his half-sister Eurybia, the daughter of Gaia and Pontus. Source: Internet
Genealogy Eos is the daughter of Hyperion and Theia and sister of Helios the sun and Selene the moon, "who shine upon all that are on earth and upon the deathless gods who live in the wide heaven." Source: Internet
Estimates based on computer simulations of such an event suggest that some twenty percent of the original mass of Theia would have ended up as an orbiting ring of debris around the earth, and about half of this matter coalesced into the Moon. Source: Internet
In this scenario, gravitational perturbations by planetesimals caused Theia to depart from its stable Lagrangian location, and subsequent interactions with proto-Earth led to a collision between the two bodies. Source: Internet
In this scenario, the mass of Theia was approximately 10% of that of Earth, it impacted Earth with a glancing blow, and some of its mass merged with Earth. Source: Internet