Libra is the Zodiac sign for those born between September 23 and October 21. The symbol for Libra is a pair of large, golden scales.
The model for Libra is the Scales of Justice used by Astraea, the goddess of justice. She would use these scales to compare the arguments of the defendant and the plaintiff in a trial to decide who was right. Interestingly, the concept of using scales in a trial can be found in other cultures such as Egyptian mythology. Anubis, the god of death, would take a person’s heart out when they died, put it on scales and compare the weight against the Feather of Truth. If the heart was lighter, the person’s soul would be sent to heaven; if it was heavier, he would be sent to hell. Astraea’s scales also became a constellation when she ascended to the heavens.
(Part of the Zodiac series: http://jinavie.tumblr.com/tagged/zodiacs/chrono)