Astrology is a method by which the forces of the universe (in which we participate) can be known by tracking their effects upon the planets. Astrology uses the planets and the coordinate systems which provide the "background" for the planets - the Zodiac and the earth framework of the houses.
The study of astrology has opened doors to insight, success and happiness since history has been recorded. From Nebuchadnezzar to Ronald Reagan, even kings and rulers have taken advantage of the advice of astrologers. In Rome, everyone who was anyone had their chart cast at birth. In fact, you were as likely to be asked, "What's your sign?" in Roman times as now, but you would have answered then with your Moon (instead of your Sun) sign! In Renaissance Europe, noblemen kept a "house astrologer" on the premises to provide continuous guidance.
Throughout the ages, people of all walks of life have sought the advice of astrologers. This advice has never been more important or timely than now. As humanity turns away from science as a religion and searches for its spiritual roots, it is looking for deeper knowledge and insight than can be found in empirical science or psychology. Such understanding can be offered by astrology.
Astrology is the study of cycles. All things follow cycles, including people. To say that we do not is to ignore the obvious evidence of the daily, weekly, monthly and yearly rhythms of our lives. With astrology we also look at the cycles of life which are not so obvious, those that last two years, seven years, 30 years (and so on). The planets follow these cycles, too. It is much easier to track the planets in their simple paths than it is to understand how our actions flow in the same rhythms, with all our complexities. Because we have free will (and a certain myopia when it comes to observing ourselves!), tracking the planets allows us to see into our nature in a way that can make the difference between success and failure, however we define it. This is the core truth of astrology which makes it valid and has held humanity in endless fascination since we first began to see the stars.