Egyptian goddess, a member of the Heliopolitan Ennead, daughter of Shut and Tefnut and wife of Geb, the earth god. She personified the vault of heaven, and representations show her as a woman standing bent over with the tips of her fingers brushing the ground. Sometimes she was represented as a cow, straddling the earth. In both cases her body is spangled with stars. She was said to swallow the sun each night and to give birth to it each morning. According to one legend, she gave birth to her five children, Osiris, Isis, Seth, Nephthys, and Horus the Elder, on the five epagomental days of the year.