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 Zodiac Crimes Robin deduce that he is plotting to commit twelve crimes based loosely on astrological signs of the zodiac and that he committed the first Zodiac Crime already by stealing the rare art map, whose initials stand for the sign of the Ram (Aries). Meanwhile, back at his hideout Joker clues the recently arrived (rather, packaged and shipped) Penguin into his astrological plan. He then gives a false clue to Batman and Robin to the effect that "Taurus the Bull is next on my show", and "You'll be singing a song of woe!" Batman and Robin deduce that Joker was telling