ok.. you want the science of astrology... it is no secret that human beings project an energy aura. produced by the electromagnatism of the body. in the same respect the earth produces an elctro magnetic aura so strong we can navigate by it. and the earth is not the only thing in the universe that creates this aura. all the planets and stars project there electro magnatism into the universe. early astrologers new this but not the science behind it and so could acurately predict events by looking at the night sky. its like knowing an apple will fall but not knowing why. the developing foetus is remakeable saseptible to these energies and so is obviously effected bye which planet is closer and at what agel to the earth it is. and an age is where a a particular energy remains in the cosmos.. for the last 2000 years it has been the energy of picies... but as we enter into the next era obviously mind sets are changing due to the coming of the new age. you have to be aware that although we are free thinkers and responsible for our own destinies.. it is this influence during the pregnacy period that influecnces us.. not tells us.. with our decsions.. the 12 sign zodiacal horoscopes that are present in news papers and not really a good source for acurately predicting your future so iw wouldn't bother... people concieved at different times will have different energies effecting them at different stages of developement and so no 2 sagitariuns are completely the same.