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It is not surprising to find a ram in the sky, for rams were frequently sacrificed to the gods, and Zeus was at times identified with a ram. But the mythographers agree that Aries is a special ram, the one whose golden fleece was the object of the voyage of Jason and the Argonauts. This ram made its appearance on Earth just as King Athamas of Boeotia was about to sacrifice his son Phrixus to ward off an impending famine.

King Athamas and his wife Nephele had an unhappy marriage, so Athamas turned instead to Ino, daughter of King Cadmus from neighbouring Thebes. Ino resented her step-children, Phrixus and Helle, and she arranged a plot to have them killed. She began by parching the wheat so that the crops would fail. When Athamas appealed for help to the Delphic Oracle, Ino bribed messengers to bring back a false reply that Phrixus must be sacrificed to save the harvest.
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Aries, the ram with the golden fleece, from the Atlas Coelestis of John Flamsteed.


Reluctantly, Athamas, took his son to the top of Mount Laphystium, overlooking his palace at Orchomenus. He was about to sacrifice Phrixus to Zeus when Nephele intervened to save her son, sending down from the sky a winged ram with a golden fleece. Phrixus climbed on the ram’s back and was joined by his sister Helle, who feared for her own life. They flew off eastwards to Colchis, which lay on the eastern shore of the Black Sea, under the Caucasus Mountains (the modern Georgia). On the way Helle’s grip failed and she fell into the channel between Europe and Asia, the Dardanelles, which the Greeks named the Hellespont in her memory. On reaching Colchis, Phrixus sacrificed the ram in gratitude to Zeus. He presented its golden fleece to the fearsome King Aeëtes of Colchis who, in return, gave Phrixus the hand of his daughter Chalciope.

After Phrixus died his ghost returned to Greece to haunt his cousin Pelias, who had seized the throne of Iolcus in Thessaly. The true successor to the throne was Jason. Pelias promised to give up the throne to Jason if he brought home the golden fleece from Colchis. This was the challenge that led to the epic voyage of Jason and the Argonauts.

When he reached Colchis, Jason first asked King Aeëtes politely for the fleece, which hung on an oak in a sacred wood, guarded by a huge unsleeping serpent. King Aeëtes rejected Jason’s request. Fortunately for the expedition, the king’s daughter, Medea, fell in love with Jason and offered to help him steal the fleece. At night to two crept into the wood where the golden fleece hung, shining like a cloud lit by the rising Sun. Medea bewitched the serpent so that it slept while Jason snatched the fleece. According to Apollonius Rhodius, the fleece was as large as the hide of a young cow, and when Jason slung it over his shoulder it reached his feet. The ground shone from its glittering golden wool as Jason and Medea escaped with it. Once free of the pursuing forces of King Aeëtes, Jason and Medea used the fleece to cover their wedding bed. The final resting place of the fleece was in the temple of Zeus at Orchomenus, where Jason hung it on his return to Greece.

On old star maps the ram is shown in a crouching position, but without wings, its head turned towards Taurus. In the sky it is not at all prominent. Its most noticeable feature is a crooked line of three stars, which marks its head. Of these three stars, Alpha Arietis is called Hamal, from the Arabic for lamb; Beta Arietis is Sheratan, from the Arabic meaning ‘two’ of something (possibly two signs or two horns, for it was originally applied to both this star and to its neighbour, Gamma Arietis); and Gamma Arietis is Mesartim, a curiously corrupted form of al-sharatan, the title which it originally shared with Beta Arietis.

In astronomy, Aries assumes a far greater importance than its brightness would suggest, for in Greek times it contained the cardinal point known as the vernal equinox. This is the point at which the Sun crosses the celestial equator from north to south. But the vernal equinox is not stationary, because of the slow wobble of the Earth’s axis known as precession.

When the Greek astronomer Hipparchus defined the position of the vernal equinox around 130 BC this point lay south of the star Mesartim (Gamma Arietis). The zodiac was then taken to start from here, and so the vernal equinox was commonly known as the first point of Aries. Because of precession, the vernal equinox has moved some 30 degrees since the time of Hipparchus and currently lies in the neighbouring constellation Pisces. Despite this, the vernal equinox is still sometimes called the first point of Aries.



© Ian Ridpath. All rights reserved

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