Selene, the Greek moon goddess and the sleep of Endymion

Selene is the Moon itself, personified as a goddess who crosses the sky each night in a chariot. She is neither an Olympian nor a marginal figure: she is a second-generation Titaness, sister of the Sun and the Dawn, with a purely astronomical function. The commonest confusion about her should be cleared up at once — Selene is not Artemis. Identifying the two is a late development, and it eventually obscured the fact that archaic Greece had a full lunar deity of its own.

Sister of the Sun and the Dawn

Hesiod gives her a perfectly coherent set of siblings: Theia, joined with Hyperion, bears great Helios, bright Selene, and Eos, the Dawn.

The three of them constitute the lighting system of the Greek world. Hyperion, whose name means “the one who goes above,” is the principle of celestial motion; Theia, “the divine one,” is associated with radiance and with the value placed on shining metals. Their children are not gods who govern heavenly bodies — they are the heavenly bodies. Selene does not drive the Moon the way a charioteer handles a separate object; she is the Moon in motion.

That difference in kind explains everything else. A deity obliged to cross the sky every single night cannot have an eventful biography. Nobody tells stories about Selene. People watch her go past.

The chariot of the Moon

The Homeric Hymn addressed to her gives the standard portrait. Selene bathes first in Ocean, puts on shining garments, yokes her bright-necked colts, and drives out; her light, the poem says, streams from her immortal head, and “the moonless sky is made bright.”

Her team is of two horses, against her brother’s four — the iconography encoding the relative rank of the two lights. Some sources give her oxen or mules instead, their horns echoing the crescent. On Attic vases and on great reliefs like the Pergamon altar she appears with her veil arched over her head in a billowing halo, a convention that would pass into the whole of Western art.

The most striking motif in that iconography is the changeover. On several vases Selene sinks at one edge of the scene while Helios rises at the other: dawn and dusk are drawn as passing traffic. It is the image-version of the mechanism Hesiod describes in the house of Night, where Day and Night are never indoors at the same time.

Endymion, or immortality through sleep

Selene’s one substantial myth is a love story that never moves.

Endymion is an exceptionally beautiful mortal — a shepherd on Mount Latmos in Caria in some versions, a king of Elis in others. Selene sees him and falls in love. Zeus then allows him to choose his own fate, and Endymion chooses endless sleep, which preserves him from age and death. He sleeps in a cave; the goddess comes down to him every night.

Pausanias, following the Elean version, credits the union with fifty daughters — a figure often connected to the fifty lunar months of an Olympiad. The Homeric Hymn separately gives her a daughter by Zeus named Pandia, “the all-bright.”

The myth is stranger than it looks. Endymion obtains exactly what Greek mythology normally withholds from mortals, perpetual youth, at the price of consciousness. He does not age because he no longer lives. He is the precise inverse of Tithonus, the lover of Eos, who was granted immortality without youth and shrivelled until nothing was left but a voice. Two sisters, Dawn and Moon, each love a mortal, and each produces a different logical catastrophe.

Drawing down the moon

A second cluster of traditions attaches Selene to magic, and it is more interesting than it first appears.

Greeks credited the witches of Thessaly with the power to draw the moon down out of the sky. Aristophanes plays with it in the Clouds, where Strepsiades seriously proposes hiring a Thessalian sorceress to capture the moon and lock it in a box, which would stop the calendar and therefore the due date on his debts. Plato mentions the belief in the Gorgias, noting that the women who claim the power pay for it with their eyes or their feet.

The motif produces one of the finest scenes in the Argonautica. Apollonius shows Selene watching Medea run through the night toward her lover, and openly mocking her: so I am not the only one, she says in effect, to slip away to Latmos — reminding the witch how often her incantations have hauled the goddess down from the sky. Selene repays years of forced obedience with a single sentence.

This kinship with sorcery explains the lasting association between Selene and Hecate, goddess of crossroads and night rites, whom the magical papyri eventually invoke in the same breath.

Pan, the fleece, and a shepherd’s trick

A rural tradition, transmitted by Virgil in the Georgics, holds that Pan seduced Selene by offering her a fleece of snowy whiteness, and so drew her into the deep woods.

The detail looks trivial and is not. Ancient commentary specifies that Pan hid his goat nature under that dazzling wool: the ugliest god in the pantheon wins the most luminous goddess by disguising himself as a precious object. It is one of the very few anecdotes in which Selene acts at all — and in it she is deceived.

How the Moon changed her name

From the fifth century BC, Selene begins to merge with Artemis, just as Helios merges with Apollo. The process completes under the empire, where a three-tier scheme takes hold: Selene in the sky, Artemis on earth, Hecate below — one female power distributed across three domains.

That scheme is a late philosophical and magical construction, not a datum of archaic religion. It took so firmly, though, that it erased Selene from ordinary vocabulary: people now say “Artemis, goddess of the moon” without a second thought, when Homer and Hesiod know nothing of the sort.

At Rome, Luna received official cult — a temple on the Aventine, another on the Palatine — and was paired with Sol in imperial ceremony. The Greek name survives in technical language: selenite, selenography, and the element selenium, named in the nineteenth century by analogy with tellurium, which was named for the Earth.

A lion that fell from the moon

One curiosity remains, preserved by several late mythographers: the Nemean lion, first of Heracles’s trials, may not have been born on earth at all. It is said to have fallen from the moon, sent by Selene or by Hera, which would explain why its hide turned ordinary weapons.

The variant is a minority report — the usual genealogy makes the lion an offspring of Typhon and Echidna — but it circulates widely enough to be worth flagging, and it gives the moon goddess an unexpected intervention in the most famous heroic cycle in Greek myth. It is worth reading alongside the labours of Heracles, where the hero dispatches an animal that may have come down from the night sky.

Further reading

For the brother who holds the daytime sky, see Helios. For her Titan parents, see Theia and Hyperion. For the Olympian she was gradually identified with, see Artemis, and for the goddess of night rites who completes the lunar triad, Hecate. For the witch who forces her down from the sky, see Medea. For the primordial Night she travels through, see Nyx.