<P> Uranus (/ ˈjʊərənəs, jʊəˈreɪnəs /; Ancient Greek Οὐρανός, Ouranos (uranós) meaning "sky" or "heaven") was the primal Greek god personifying the sky and one of the Greek primordial deities . Uranus is associated with the Roman god Caelus . In Ancient Greek literature, Uranus or Father Sky was the son and husband of Gaia, Mother Earth . According to Hesiod's Theogony, Uranus was conceived by Gaia alone, but other sources cite Aether as his father . Uranus and Gaia were the parents of the first generation of Titans, and the ancestors of most of the Greek gods, but no cult addressed directly to Uranus survived into Classical times, and Uranus does not appear among the usual themes of Greek painted pottery . Elemental Earth, Sky, and Styx might be joined, however, in a solemn invocation in Homeric epic . </P> <P> The most probable etymology traces the name to a Proto - Greek form * worsanós (Ϝορσανός) enlarged from * ṷorsó - (also found in Greek ouréō' to urinate', Sanskrit varṣá' rain', Hittite ṷarša -' fog, mist'). The basic Indo - European root is * ṷérs -' to rain, moisten' (also found in Greek eérsē' dew', Sanskrit várṣati' to rain', Avestan aiβi. varəšta' it rained on'), making Ouranos the' rainmaker' . A less likely etymology is a derivative with meaning' the one standing on high' from PIE * ṷérso - (cf . Sanskrit várṣman' height, top', Lithuanian viršùs' upper, highest seat', Russian verx' height, top'). Of some importance in the comparative study of Indo - European mythology is the identification by Georges Dumézil (1934) of Uranus with the Vedic deity Váruṇa (Mitanni Aruna), god of the sky and waters, but the etymological equation is considered untenable . </P> <P> In Hesiod's Theogony, Uranus is the offspring of Gaia, the earth goddess . Alcman and Callimachus elaborate that Uranus was fathered by Aether, the god of heavenly light and the upper air . Under the influence of the philosophers, Cicero, in De Natura Deorum ("Concerning the Nature of the Gods"), claims that he was the offspring of the ancient gods Aether and Hemera, Air and Day . According to the Orphic Hymns, Uranus was the son of Nyx, the personification of night . Uranus was the brother of Pontus, the God of the sea . </P> <P> According to Hesiod's Theogony, Uranus mated with Gaia to create the twelve Titans: Oceanus, Coeus, Crius, Hyperion, Iapetus, Theia, Rhea, Themis, Mnemosyne, Phoebe, Tethys and Cronus; the Cyclopes: Brontes, Steropes and Arges; and the Hecatoncheires ("Hundred - Handed Ones"): Cottus, Briareos, and Gyges . </P>

Who is the god of heaven in greek mythology