Ra is the ancient Egyptian sun god. He was a major deity in ancient Egyptian religion by the fifth dynasty. Identified primarily with the mid-day sun, the chief cult centre of Ra first was based in Heliopolis (ancient Inunu) meaning City of the Sun .Ra is most commonly pronounced 'rah'. It is more likely, however, that it should be pronounced as 'ray', hence the alternative spelling Re rather than Ra. It is not known for sure what Ra's name means, but it is thought it may be a variant of or linked to 'creative', if not an original word for 'sun'. As his cult arose in the Egyptian pantheon, Ra often replaces Atum as the father, grandfather and great-grandfather of the deities of the Ennead, and becomes the creator of the world. Ra then was seen to have created Sekhmet, who becomes Hathor, the cow goddess, after she has sufficiently punished mankind as an avenging Eye of Ra, and so he is often said to be the father of both and brother to the god, Osiris. Eventually, humans were supposedly created from Ra's tears or sweat, leading to the Egyptians calling themselves the Cattle of Ra .