"First planet discovered that was not known in ancient times, named for the god of Heaven, husband of Gaia, the Earth, from Latin Uranus, from Greek Ouranos literally "heaven," in Greek cosmology, the god who personifies the heavens, father of the Titans. Cf. Urania, name of the Muse of astronomy, from Greek Ourania, fem. of Ouranios, literally "heavenly.""