The night sky was deeply mysterious to ancient people. They could observe regularities in the motions of celestial objects, but they had no understanding of their true nature. Ancient cultures thought that the objects of the night sky exerted a special power over humans. This belief system is called astrology: the idea that configurations of planets and stars in the sky cause or influence human events on Earth. Astrology is just one example of a wide set of ancient beliefs that patterns in nature cause or influence human events. In a pre-scientific era — when there are no rational explanations for natural events — it is perhaps inevitable that humans will ascribe special powers to the things they don’t understand.
Classical constellations of the Zodiac. Click here for original source URL.