Greek personification of the evening star, the planet Venus at dusk, counted (with the morning star Eosphoros) among the star-children of the Titan Astraeus and Eos. Greek astronomy from at least Pythagoras recognised the evening and morning stars as one body, so Hesperus and Eosphoros (Phosphoros) merge into a single identity; the Latin counterpart is Vesper. Sappho hailed him as the star that brings home all that the bright dawn scattered. Parentage is given variously (son of Astraeus and Eos, or of Cephalus, or brother of Atlas), so no fixed parents are asserted here.