There have been sun gods throughout history. Some are depicted as traveling across the sky in a vessel of some sort, like a boat, chariot, or cup. The sun god of the Greeks and Romans rode in a 4-horse (Pyrios, Aeos, Aethon, and Phlegon) chariot. The Egyptians differentiated among the aspects of the sun, and had several gods associated with it: Khepri for the rising sun, Atum, the setting, and Ra, at noon. The Greeks and Romans also had more than one sun god. It seems that most sun deities are male and counterparts to the often female moon deities, although there are goddesses of the sun and gods of the moon.