In the old pre-Olympian genealogy of the gods, Helios, the sun, is Selene's brother: after her brother, Helios, finishes his trip across the sky, Selene, freshly washed in the waters of the Earth-circling Ocean, begins her own trip as night falls upon the earth, which becomes lit from the light of her head and golden crown. When she is growing after mid-month, it is a "sure token and a sign to mortal men". Her sister, Eos, is goddess of the dawn. Eos also carried off a human lover, Cephalus, which is like a myth of Selene and Endymion.