It is a pseudo science. Meaning it is not science but it does have some aspects of science attached to it.
Why can't it be science? Well because as we all know, the sun does not revolve around the earth. That is a geocentric system, we in fact, live in a heliocentric solar system (meaning all the planets revolve around the sun).
The basis of astrology is a geocentric system meaning that the Earth is the centre of the universe. Now for the purposes of astrology this is not wrong. Astrology is based on looking at the solar system with the individual being the centre of all things.
Let's be honest in our own minds we are the centre of our own universe.
So it matters to practitioners of astrology where all the planets, sun, moon and associated satellites are in relation to you at the moment of your birth.
I can hear all the pooh-whoers out there saying, people are more than 12 signs, and all those 12 signs can't be the same.Guess what in astrology you are 100% more than your star sign. You might be born between 21 March and 20 April (or thereabouts) and be an Aries - meaning your sun sign is an Aries but then we find need your ascendant (or rising sign) the sign that is rising over the horizon at the time you were born (let's say it was Libra), now you have 2 opposing sign making up a great proportion of your personality. Let's not forget we need to add in your moon sign.
So time for a little math
12 stars signs multiplied by 12 possible rising signs = 12 x 12 = 144 zodiac personalities
BUT we can't stop there we now have 144 zodiac personalities but there are 12 possible locations of your moon so now more math
144 x 12 = 1728 personality types.
So it goes on - where is your Mercury, your Venus, your Mars etc and as we multiply these based on your time of birth we then get millions of possibilities of who you are.
So don't forget to come back - find out more about you!