Mars (♂) is ardent and presides over the genitals according to Manilius. Mars is called "The Bringer Of War" in Alan Leo's What is a Horoscope? because the planet is associated with the Roman god of war, Mars. Mars is associated with confident and aggressive personalities in Western astrology. Mars is also associated with the principles of energy, ambition, and drive.
Mars is considered the ruling planet of Aries. Before the discovery of Pluto, Mars was also considered the ruler of Scorpio. Most modern astrologers consider Pluto the ruler of Scorpio, but may regard Mars as a co-ruler. Some more traditional astrologers still regard Mars as the only ruler of Scorpio.
- Wikipedia (2005). Planets in Astrology (http://en.wikipedia.org/wiki/Planets_in_astrology). Retrieved March 2, 2005