Chapter Ⅶ

The Ship & the Southern Sea

Below the zodiac the sky turns to water: a monster still lurking near the royal family, a river that swallowed a falling boy, and the greatest ship ever to sail — so big the astronomers had to break it up.

Cetus & Eridanus — the Monster and the River

The villain of Chapter Ⅰ, exiled but not gone.

Cetus, the sea-monster Perseus petrified, was placed far to the south of the royal family — still visible from their thrones, still lurking below the zodiac. On its neck pulses Mira, “the Wonderful”: the first variable star ever recognised (1596), swelling bright and fading to invisibility every eleven months — a monster that breathes.

Eridanus is the river Phaethon fell into when he begged to drive his father Helios's Sun-chariot for one day, lost control, scorched the Earth, and was struck down by Zeus's thunderbolt. His friend Cycnus (Chapter Ⅳ) dove for his bones; his sisters wept themselves into poplar trees, their tears hardening into amber.

In the sky: the river rises beside Orion's foot Rigel and meanders south out of northern view, ending at brilliant Achernar — Arabic ākhir al-nahr, “the river's end”.

Argo Navis — the Great Ship

Fifty heroes, one speaking ship, and the Golden Fleece.

The Argo carried Jason and fifty heroes — Heracles, Orpheus, Castor and Pollux among them, a reunion of half this guide — to Colchis to seize the Golden Fleece of the ram Aries. Built with a speaking beam of oracular oak from Dodona, the ship itself gave counsel and once cried out in fear.

In the sky Argo was so enormous that the IAU finally broke it into three: Carina the Keel, Puppis the Stern, Vela the Sails — the only Ptolemaic constellation ever dismantled. In Carina burns Canopus, second-brightest star of the night: Arabic Suhayl, the desert traveller's southern beacon.

In the sky: from mid-northern latitudes only the ship's upper works clear the southern horizon in winter; the far south sees her whole, sailing the Milky Way.