What's Your Big Three?Uncover Deep Truths About Yourself through Sun, Moon, and Rising Signs Embark on a fascinating journey of self discovery by exploring the three most important facets of your astrological blueprint. Your sun sign represents your will; it's who you are at your core. Your moon sign reveals your inner self, where vulnerability, emotions, and needs reside. Your rising sign, or ascendant, describes the outer layer you show to people when you first meet.