
As famous for his astrology as for his astronomy, Ptolemy compiled the Tetrabiblos, a treatise on astrology that remains the “bible” of the subject. Natal astrology reached its peak with Ptolemy 400 years later. In particular, they believed that the configuration of the Sun, Moon, and planets at the moment of birth affected a person’s personality and fortune-a doctrine called natal astrology. When the Babylonian culture was absorbed by the Greeks, astrology gradually came to influence the entire Western world and eventually spread to Asia as well.īy the 2nd century BCE the Greeks democratized astrology by developing the idea that the planets influence every individual. The Babylonians, believing the planets and their motions influenced the fortunes of kings and nations, used their knowledge of astronomy to guide their rulers. The Beginnings of AstrologyĪstrology began in Babylonia about two and half millennia ago. From such ideas was born the ancient system called astrology, still practiced by some people today, in which the positions of these bodies among the stars of the zodiac are thought to hold the key to understanding what we can expect from life. Even in the comparatively sophisticated Greece of antiquity, the planets had the names of gods and were credited with having the same powers and influences as the gods whose names they bore. Most ancient cultures associated these seven objects with various supernatural rulers in their pantheon and kept track of them for religious reasons. The movements of the seven objects that had the power to “wander” through the realm of the sky-the Sun, the Moon, and five planets visible to the unaided eye-clearly must have special significance in such a system of thinking. Any signs that helped people understand what these gods had in mind were considered extremely important. Before the time of our scientific perspectives, everything that happened in nature-from the weather, to diseases and accidents, to celestial surprises such as eclipses or new comets-was thought to be an expression of the whims or displeasure of the gods.

For them, the study of the heavens was not an abstract subject it was connected directly to the life-and-death necessity of understanding the actions of the gods and currying favor with them. Many ancient cultures regarded the planets and stars as representatives or symbols of the gods or other supernatural forces that controlled their lives. Summarize the arguments that invalidate astrology as a scientific practice.By the end of this section, you will be able to:
