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A constellation that dates to ancient times, in legend Aries represented the Ram whose golden fleece was sought by Jason and the Argonauts. Despite not being a very bright constellation, it has assumed great importance in astronomy, because around 2,000 years ago it contained the point where the Sun passed from south to north across the celestial equator each year. This point, the vernal equinox marked the start of spring in the northern hemisphere.
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