You kw your zodiac sign. Maybe you're a Virgo, or an Aquarian. But did you kw that your sign is t the same thing as the zodiac constellation that it is named after? Your sign is actually in a different part of space to the constellation of stars we can see in the sky. What? That makes sense...or does it? In this book, The Origin and Nature of the Tropical Zodiac, researcher Dr Damien Pryor unpacks the difference between what's kwn among astrologers as the 'sidereal zodiac', and the 'tropical zodiac.' The sidereal zodiac, made up of the 12 constellations, is visible and real. The tropical zodiac, on the other hand, does t exist in the sense of a visible group of stars. So what is it, actually? Astromers believe it's just a fanciful idea, with basis in reality. Yet there are many references to the tropical zodiac in ancient Greek texts, including the writings of Ptolemy. Dr Pryor's meticulous research into these texts reveals the secret of what the tropical zodiac is, and how the teachers in the ancient Greek and Babylonian Mysteries understood it. Written in everyday language, with helpful graphics, The Origin and Nature of the Tropical Zodiac is an invaluable resource for astrologers - and anyone who has an interest in their astrological sign.