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
Dragon (zodiac) Dragon (zodiac) The Dragon () is the fifth of the 12-year cycle of animals which appear in the Chinese zodiac related to the Chinese calendar. It is also the only zodiac sign represented by a mythical creature, rather than a real life animal. The Year of the Dragon is associated with the Earthly Branch symbol 辰, pronounced "chen". It has been proposed by one academic researcher that the Earthly Branch character may have been associated with scorpions; it may have symbolized the Star Antares. In the Buddhist calendar used in Thailand, Cambodia, Laos, Myanmar, and Sri Lanka, the Dragon is