Chapter Ⅱ

The Bears That Never Set

A love affair of Zeus, a jealous goddess, and a hunter who nearly shot his own mother — the myth that explains why the northern stars never touch the horizon.

Ursa Major — Callisto, the Great Bear

The nymph who paid for Zeus's affections.

Callisto, a huntress sworn to Artemis, was seduced by Zeus. When jealous Hera discovered it, she turned Callisto into a bear — condemned to roam the woods she once hunted. Years later her own son Arcas, now a hunter, drew his spear on the great bear that ran toward him with open arms.

Zeus intervened at the last instant, hurling both into the sky by their tails — which is why, the Greeks joked, these celestial bears have impossibly long tails (real bears have stumps). Hera got the final word: she asked Tethys, goddess of the ocean, to forbid them from ever bathing. So the Bears never set — never allowed to rest below the waves.

In the sky: the Dipper is only the bear's hindquarters and tail — the full bear is three times bigger. The two bowl-edge stars point to Polaris. Arab tradition saw a funeral bier and mourners here instead: banāt naʿsh, “daughters of the bier”.

Ursa Minor & Draco — the Little Bear and the Dragon

Arcas became the Little Bear; a dragon coils between them.

The son placed beside the mother, his tail-tip anchored on the most important star in the sky: Polaris, the hub the whole heaven wheels around.

Draco is often named as Ladon, the hundred-eyed dragon guarding Hera's golden apples, flung into the sky after Heracles slew it — landing twisted and knotted between the Bears. In 2700 BC the dragon's star Thuban was the pole star: the pyramids of Giza have shafts aligned to it. Earth's slow wobble (precession, a 26,000-year cycle) has since handed the pole to Polaris.

In the sky: Polaris is famously not bright — 48th in the sky. Its power is position, not brilliance.

Boötes — the Bear-Keeper

The herdsman who drives the Bears around the pole.

In the older telling, Boötes is Arcas — eternally following his bear-mother across the sky, hunting dogs (Canes Venatici) straining at the leash. Night after night he chases her around the pole and never catches up.

At his knee burns Arcturus — Greek for “guardian of the bear” — the fourth-brightest star in the night sky, an orange giant 25 times the Sun's width.

In the sky: follow the arc of the Dipper's handle away from the bowl — “arc to Arcturus” — the most reliable star-hop in astronomy.