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A semi-circle of stars between Boötes and Hercules marks the golden crown worn by Princess Ariadne of Crete when she married the god Dionysus. The crown is said to have been made by Hephaestus, the god of fire, and was studded with jewels from India.

Ariadne, daughter of King Minos of Crete, is famous in mythology for her part in helping Theseus to slay the Minotaur, the gruesome creature with the head of a bull on a human body. Ariadne was actually half-sister to the Minotaur, for her mother Pasiphae had given birth to the creature after copulating with a bull owned by King Minos. To hide the family’s shame, Minos imprisoned the Minotaur in a labyrinth designed by the master craftsman Daedalus. So complex was the maze of the labyrinth that neither the Minotaur nor anyone else who ventured in could ever find their way out.
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Corona Borealis, a jewelled crown, shown in the Atlas Coelestis of John Flamsteed (1729).


One day the hero Theseus, son of King Aegeus of Athens, came to Crete. Theseus was a strong, handsome man with many of the qualities of Heracles and was unsurpassed as a wrestler. Ariadne fell in love with him on sight. When Theseus offered to kill the Minotaur she consulted Daedalus, who gave her a ball of thread and advised Theseus to tie one end to the door of the labyrinth and pay out the thread as he went along. After killing the Minotaur with his bare hands, Theseus emerged by following the trail of thread back to the door.

He sailed off with Ariadne, but no sooner had they reached the island of Naxos than he abandoned her. As she sat there, cursing Theseus for his ingratitude, she was seen by Dionysus. The god’s heart melted at the sight of the forlorn girl and he married her on the spot.

Accounts differ about where Ariadne’s crown came from. One story says that it was given to her by Aphrodite as a wedding present. Others say that Theseus obtained it from the sea nymph Thetis, and that its sparkling light helped Theseus find his way through the labyrinth. Whatever the case, after their wedding Dionysus joyfully tossed the crown into the sky where its jewels changed into stars. Its brightest star is called Gemma, the Latin for ‘jewel’, although it is also known as Alphekka from the Arabic name for the constellation.
Chinese associations
Corona Borealis is one of the few constellations that ancient Chinese astronomers drew in much the same way as we do, namely as an arc or loop. Hence it is relatively easy to pick out on Chinese star charts. Chinese astronomers charted nine stars in the loop, from Pi to Rho Coronae Borealis, which they called Guansuo, the prison for working-class miscreants; the prison for the upper classes, Tianlao, was more auspiciously placed farther north, in Ursa Major.

Xi Coronae Borealis was one end of the constellation Tianji, which extended over the border from neighbouring Hercules.



© Ian Ridpath. All rights reserved


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