After learning about the Zodiac, the next step is learning about the planets and how they work in astrology.
The first thing you need to realise is that 'planet' in astrology terms and 'planet' in astronomy terms mean two different things. For ease in communication, astrologers have kept the old use of the word and it applies to any large heavenly body. For instance, the Sun is called a planet, as is the Moon, and Pluto.
The Seven Sacred Planets, or the original seven that were known to the ancient astrologers, are understood quite well in relation to your chart. However, newer planets (especially the latest discovery, Chiron) are stilled being argued about, so sometimes you will see conflicting data about rulerships. When in doubt, make up your own mind.
As it was taught to me, the planet is where the energy is coming from and the zodiac sign through which that energy is traveling through, modifies that energy in your individual chart. (See my Procession of the Equinox arguement.) --RavenDreams 06:18, 4 April 2007 (UTC)