In Greek mythology
Greek mythology
Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

, Nyx was the primordial goddess
A goddess is a female deity. In some cultures goddesses are associated with Earth, motherhood, love, and the household. In other cultures, goddesses also rule over war, death, and destruction as well as healing....

 of the night. A shadowy figure, Nyx stood at or near the beginning of creation, and was the mother of personified gods
A deity is a recognized preternatural or supernatural immortal being, who may be thought of as holy, divine, or sacred, held in high regard, and respected by believers....

 such as Hypnos
In Greek mythology, Hypnos was the personification of sleep; the Roman equivalent was known as Somnus. His twin was Thánatos ; their mother was the primordial goddess Nyx . His palace was a dark cave where the sun never shines. At the entrance were a number of poppies and other hypnogogic plants...

 (sleep) and Thánatos
In Greek mythology, Thanatos was the daemon personification of death. He was a minor figure in Greek mythology, often referred to but rarely appearing in person...

 (death). Her appearances in mythology are sparse, but reveal her as a figure of exceptional power and beauty.
In Hesiod
Hesiod was a Greek oral poet generally thought by scholars to have been active between 750 and 650 BC, around the same time as Homer. His is the first European poetry in which the poet regards himself as a topic, an individual with a distinctive role to play. Ancient authors credited him and...

's Theogony
The Theogony is a poem by Hesiod describing the origins and genealogies of the gods of the ancient Greeks, composed circa 700 BC...

, Nyx is born of Chaos
Chaos (cosmogony)
Chaos refers to the formless or void state preceding the creation of the universe or cosmos in the Greek creation myths, more specifically the initial "gap" created by the original separation of heaven and earth....

; her offspring are many, and telling. With Erebus
In Greek mythology, Erebus , also Erebos , was often conceived as a primordial deity, representing the personification of darkness; for instance, Hesiod's Theogony places him as the first five beings to come into existence from Chaos...

 the deity of shadow and darkness, Nyx gives birth to Aether
Aether (mythology)
Aether , in Greek mythology, is one of the Protogenoi, the first-born elementals. He is the personification of the upper sky, space, and heaven, and is the elemental god of the "Bright, Glowing, Upper Air." He is the pure upper air that the gods breathe, as opposed to the normal air that mortals...

 (atmosphere) and Hemera
In Greek mythology Hemera was the personification of day and one of the Protogenoi or primordial deities. She is the goddess of the daytime and, according to Hesiod, the daughter of Erebos and Nyx...