La Nuit by William-Adolphe Bouguereau (1883)
|Siblings||Erebus, Gaia, Tartarus and Eros|
Nyx (Ancient Greek: Νύξ, "night") – Nox in Latin translation – is the Greek goddess (or personification) of the night. A shadowy figure, Nyx stood at or near the beginning of creation, and was the mother of other personified gods such as Hypnos (Sleep) and Thánatos (Death). Her appearances in mythology are sparse, but reveal her as a figure of exceptional power and beauty. She is found in the shadows of the world and only ever seen in glimpses.
Mythology and literature 
In Hesiod's Theogony, Nyx is born of Chaos. With Erebus (Darkness), Nyx gives birth to Aether (Brightness) and Hemera (Day). Later, on her own, Nyx gives birth to Moros (Doom, Destiny), Ker (Fate, Destruction, Death), Thanatos (Death), Hypnos (Sleep), the Oneiroi (Dreams), Momus (Blame), Oizys (Woe, Pain, Distress), the Hesperides, the Moirai (Fates), the Keres, Nemesis (Indignation, Retribution), Apate (Deceit), Philotes (Friendship, Love), Geras (Old Age), and Eris (Strife).
In his description of Tartarus, Hesiod locates there the home of Nyx and the homes of her children Hypnos (Sleep) and Thanatos (Death). Hesiod says further that Hemera (Day), who is Nyx's daughter, left Tartarus just as Nyx entered it; when Hemera returned, Nyx left. This mirrors the portrayal of Ratri (night) in the Rigveda, where she works in close cooperation but also tension with her sister Ushas (dawn).
At Iliad 14.249–61, Hypnos, the minor god of sleep, reminds Hera of an old favor after she asks him to put Zeus to sleep. He had once before put Zeus to sleep at the bidding of Hera, allowing her to cause Heracles (who was returning by sea from Laomedon's Troy) great misfortune. Zeus was furious and would have smitten Hypnos into the sea if he had not fled to Nyx, his mother, in fear. Homer goes on to say that Zeus, fearing to anger Nyx, held his fury at bay, and in this way Hypnos escaped the wrath of Zeus. He disturbed Zeus only a few times after that always fearing Zeus and running back to his mother Nyx, who would have confronted Zeus with a maternal fury.
Nyx took on an even more important role in several fragmentary poems attributed to Orpheus. In them, Nyx, rather than Chaos, is the first principle. Nyx occupies a cave or adyton, in which she gives oracles. Cronus – who is chained within, asleep and drunk on honey – dreams and prophesies. Outside the cave, Adrasteia clashes cymbals and beats upon her tympanon, moving the entire universe in an ecstatic dance to the rhythm of Nyx's chanting. Phanes – the strange, monstrous, hermaphrodite Orphic demiurge – was the child or father of Nyx. Nyx is also the first principle in the opening chorus of Aristophanes' The Birds, which may be Orphic in inspiration. Here she is also the mother of Eros.
The theme of Nyx's cave or mansion, beyond the ocean (as in Hesiod) or somewhere at the edge of the cosmos (as in later Orphism) may be echoed in the philosophical poem of Parmenides. The classical scholar Walter Burkert has speculated that the house of the goddess to which the philosopher is transported is the palace of Nyx; this hypothesis, however, must remain tentative.
Nyx in society 
More often, Nyx lurks in the background of other cults. Thus there was a statue called "Nyx" in the Temple of Artemis at Ephesus. The Spartans had a cult of Sleep and Death, conceived of as twins. Cult titles composed of compounds of nyx- are attested for several gods, most notably Dionysus Nyktelios "nocturnal" and Aphrodite Philopannyx "who loves the whole night".
In 1997, the International Astronomical Union approved the name Nyx for a mons (mountain/peak) feature on the planet Venus. Nyx Mons is located at latitude 30° North and longitude 48.5° East on the Venusian surface. Its diameter is 875 km.
On June 21, 2006, the International Astronomical Union renamed one of Pluto's recently discovered moons (S/2005 P 2) to Nix, in honor of Nyx. The name was spelled with an "i" instead of a "y", to avoid conflict with the asteroid 3908 Nyx.
|Titans and Olympians|
With no father:
- Achlys (Death Mist)
- Apate (Deceit)
- Erinyes (The Furies)
- Eris (Strife or Spite)
- Geras (Old Age)
- Hesperides (Sunset goddesses)
- Keres (Fates of Death)
- Moirai (The Fates)
- Momus (Blame, Mockery, Gaiety)
- Oizys (Misery)
- Oneiroi (the Tribe of Dreams): Morpheus, Phobetor and Phantasos
- Phanes (variously described as Nyx's father, brother, husband or son)
- Philotes (Pleasure of love, Friendship)
- Phobetor (or according to Cicero, by Erebus; also known as Ikelos)
- Lyssa (Madness)
- Eros is also mentioned as the son of Aphrodite and Ares.
- Hesiod, Theogony 123.
- Hesiod, Theogony 124–125; Gantz, p. 4.
- Hesiod, Theogony 212–225; Gantz, pp. 4–5.
- Hesiod, Theogony 744–745.
- Hesiod, Theogony 758–759.
- Hesiod, Theogony 746–750.
- Pausanias 1.40.1).
- Pausanias, 10.38.6, trans. Jones and Ormerod, 1918, from perseus.org.
- Pausanias 3.18.1.
- Pausanias 1.40.6)
- Orphic Hymn 55.
- Akhlys: "Nowhere stated, though probable"
- Aristophanes, The Birds
- Gantz, Early Greek Myth: A Guide to Literary and Artistic Sources, Johns Hopkins University Press, 1996, Two volumes: ISBN 978-0-8018-5360-9 (Vol. 1), ISBN 978-0-8018-5362-3 (Vol. 2).
- Grimal, Pierre, The Dictionary of Classical Mythology, Wiley-Blackwell, 1996, ISBN 978-0-631-20102-1. "Nyx" p. 314
- Hesiod, Theogony, in The Homeric Hymns and Homerica with an English Translation by Hugh G. Evelyn-White, Cambridge, MA.,Harvard University Press; London, William Heinemann Ltd. 1914.
- Otto Kern ed., Orphicorum Fragmenta.
- Pausanias, Descriptions of Greece.
- Simmons, Olympos.
- Smith, William; Dictionary of Greek and Roman Biography and Mythology, London (1873). "Nyx"
Media related to Nyx at Wikimedia Commons