Astrology is the practice of observing the positions of stars, planets, and other celestial bodies in order to gain insight into human affairs and natural phenomena. It is based on the idea that the movements of these celestial bodies affect the events and experiences that take place on Earth. 

Astrologers use one's birth chart, which is a snapshot of the position of the various celestial objects at the moment of their birth. This chart is then used to gain insight into the person's personality, relationships, and life path.

Astrology also involves the interpretation of astrological events, such as the movements of the planets and their alignment with each other. These events are believed to have an impact on the world at large and can be used to gain insight into current events and trends. 

While astrology is not considered a scientific discipline and is not widely accepted by the scientific community, it has been practiced in various forms for thousands of years and continues to be a popular and influential belief system in many cultures around the world.