Zodiac constellations can be traced even further back, to Bronze Age (First Babylonian dynasty) sources, including Gemini "The Twins", from MAŠ.TAB.BA.GAL.GAL "The Great Twins", and Cancer "The Crab", from AL.LUL "The Crayfish", among others. Around the end of the 5th century BC, Babylonian astronomers divided the ecliptic into twelve equal "signs", by analogy to twelve schematic months of thirty days each. Each sign contained thirty degrees of celestial longitude, thus creating the first known celestial coordinate system. Unlike modern astronomers, who place the beginning of the sign of Aries at the place of the Sun at the vernal equinox; Babylonian astronomers
The Golden Crab the fisherman to fetch rich garments for himself and his bride, and had himself carried to the castle on a golden cushion. After the wedding, he told his bride that he was an enchanted prince, a crab by day and a man by night, though he could change himself into an eagle whenever he liked. They spent their nights together, and soon the princess had a son. The king held another tournament, and if any of the knights pleased her, she would marry him instead of the crab. The crab sent the princess to give orders for his golden armor