Astrology is the study of the movements and relative positions of the planets or other celestial objects as a means for divining information about human affairs and terrestrial events - past, present or future. Astrology has been dated to at least the 2000 BC and has its roots in calendrical systems used to predict seasonal shifts and to interpret celestial cycles as signs of divine communications. Many cultures have attached importance to astronomical events, and some – such as the Indians, Chinese, and Mayans – developed elaborate systems for predicting terrestrial events from celestial observations.
Western astrology, one of the oldest astrological systems still in use, can trace its roots to Mesopotamia in the 19th-17th centuries BC, from which it spread to Ancient Greece, Rome, the Arab world and eventuallyCentral and Western Europe. Contemporary Western astrology is often associated with systems of horoscopes that explain aspects of a person's personality and predict significant events in their lives based on the positions of the planets or stars. the majority of professional astrologers rely on such systems.
Throughout most of its history astrology was considered a scholarly tradition and was common in academic circles, often as an accepted aspect of astronomy and medicine. It was present in political circles, and is mentioned in various works of literature including those of Chaucer and Shakespear.
With the onset of the scientific revolution astrology was called into question; it has been challenged with much success both on theoretical and experimental grounds. Though astrology thus lost its academic and theoretical standing, common belief in it has largely remained the same. Though is has been labeled "pseudoscience", astrologers continue to predict the future and delineate human personality with a degree of accuracy. It is claimed by many that their accuracy is not due to the science of astrology but to the intuitive ability of the astrologers.