Star Chart Picture

First Sign(Symbol) - Libra is the symbol of balance. This constellation appears at the time of the autumnal equinox, when days and nights are equal.

Middle Sign - The sign of Scorpio stems from the Tale of Orion. Orion was the son of Poseidon and Euryale. Orion was also a favored hunting partner by Artemis which made her brother Apollo very envious. Apollo pleaded to Gaea to create a giant scorpion to kill Orion. Gaea obliged, and the scorpion stung and killed great Orion. In rememberance of this struggle, Zeus placed Orion and the scorpion amongst the stars.

Third Sign(Symbol) - This sign is representative of the centaur, Cheiron. Cheiron was a friend of many great hero's in Greek mythology such as Achilles and Heracles. Speaking of Heracles, some friend he turned out to be. While hunting, Heracles accidently shot Cheiron in the leg with a poison arrow. Cheiron was immortal so he couldn't die, he just had to take the unending pain. Heracles promised to help him somehow. Upon his ventures, Heracles came upon Prometheus who was trapped with no way of escape. The only way Prometheus could be set free was for someone else to take his place. Cheiron wanted only to be relieved of his insufferable pain, so he took Prometheus' place and died. In honor of the noble act, Zeus placed Cheiron amongst the stars.
(Chiron is said to be aiming his arrow at Scorpio to avenge the death of Orion.)

*sigh* more useless mythology, but I love this stuff none the less. Maybe I'll make a "good" picture relating to the zodiac some day
Continue Reading: Poseidon