
Aether (Aither) was a primordial deity in Greek mythology, the personification of the bright upper air in which the gods live. In Hesiod he is the son of Erebus and Nyx (Night) and the brother of Hemera (Day). The same word names the pure upper sky itself, which ancient poets distinguish from the thicker air breathed by mortals.
Hesiod makes Aether a child of the first generation of the world. From Chaos came Erebus and black Night, and Night, mingling in love with Erebus, bore Aether and Hemera (Hesiod, Theogony 123–125). Aether is therefore a brother of Hemera (Day), and a descendant of Chaos. Hesiod tells no story about him and gives him no consort or children.
In the poets, aither is the bright upper air above the clouds. In the Iliad, Poseidon describes the division of the world among the three sons of Cronus: Poseidon received the sea, Hades the misty darkness, and Zeus the wide heaven in the aether and the clouds (Iliad 15.189–193). Hesiod says that the son of Cronus dwells in the aether (Works and Days 18) and that when Zeus struck the Titans, the flame went up to the divine aether (Theogony 697). Virgil, in a famous passage, speaks of Father Aether descending with fertilising rain into the lap of his joyous wife, the Earth, and mingling with her great body to nourish all her offspring (Georgics 2.325–327). Here Aether is a name of the sky god. Homer uses a different word, aer, for the thick, misty air near the earth: Aphrodite hides Paris in a thick aer to save him from Menelaus (Iliad 3.380–382), and Ajax prays to Zeus to lift the aer that covers the Achaeans and make the sky clear (Iliad 17.643–647). Aether is the clear, bright air above.
Hesiod, Theogony 123–125, 697; Hesiod, Works and Days 17–19; Homer, Iliad 3.380–382, 15.189–193, 17.643–647; Virgil, Georgics 2.325–327.
Passages that name Aether, in the original with English translation. The line gives the work and reference as scholars cite it.