Aries is a fire sign. It's symbol is the ram. It's quality is cardinal. Aries is ruled by the planet Mars. Sailor Mars/Rei/Raye is an Aries. Aries are usually active, forceful, confident, and can be impatient. As a fire sign, Aries are usually outgoing, joyful, and sometimes have a temper.
Check out your compatibilities here.
