Your Big 3 includes your Sun and Moon and their respective House placements in your chart, and the Ascendant. Each of these placements, along with the other planets within your chart, rule over a certain aspect of your personality and your life. Your Sun sign describes your essence, your character; what drives and motivates you, and the kind and amount of energy you express. Your Moon represents the emotional or subconscious self, your habit patterns, what makes you feel secure or insecure and how you react. Your Rising / Ascendant represents the way people perceive you, (this reflects the energy you bring to your personality and your life).