The sister of Helios in Greek mythology is Eos, the goddess and personification of the dawn. She is a daughter of the Titans Hyperion and Theia, and the sister of Helios (the sun god) and Selene (the moon goddess). Eos is known for rising each morning to bring the dawn and is often described as "rosy-fingered," a reference to the colors of the sky at dawn. Another sister of Helios is Selene, the goddess and personification of the moon. Both Eos and Selene are siblings to Helios, sharing the same Titan parents, Hyperion and Theia.
