W D Gann combined Astrology and Astronomy and he termed it as Astrononamy. He travel to India, Egypt and England to learn various Astrological and Astronomical principles. He studied thousands of charts of each stocks, commodities and market moments in correlation with Astrological and Astronomical principles and made great discoveries. He not only predicted the market outcomes but also other geo political events like end and beginning of world war, financial melt downs etc. 

Gann discovered through his years of research that when the traders personal planetary positions are bad its better that he keep away from market. He has explained with his own personal examples where he made 200 odd trade without any losses but suddenly he started incurring losses. When he learned Astrology he found that during those period when he started incurring losses Saturn was coming into his birth house that this is a very bad period for the individual. 

What Gann told was " Stocks and commodities vibrate in accordance with both their own individual energy / vibration (i.e. internal vibration) and also in accordance with energy/ vibration transmitted through space (i.e. external vibration). “From my extensive investigations, studies and applied tests, I find that not only do the various stocks vibrate, but that the driving forces controlling the stocks are also in a state of vibration”.The overall energy/ vibration of a stock or commodity is reflected in its price". “These vibratory forces can only be known by the movements they generate on the stocks and their values in the market” (Ticker interview) . It is thought that Gann believed the external energy/vibration acting on a stock or commodity is subject to astrological influences (although he does not explicitly state this in his Ticker interview).

What Gann told was " From time to time a stock or commodity will lose its sensitivity (or receptivity) to certain influences (astrological or otherwise). As a consequence it will become inert (i.e. its rate of vibration will fall) and its price will typically enter a downtrend.“Stocks create their own field of action and power; power to attract and repel, which principle explains why certain stocks at times lead the market and ‘turn dead’ at other times”(Ticker interview).Thus, if the assumption that astrology plays an important role in Gann’s method of forecasting markets is correct, the key technique in applying the Law of Vibration is to accurately identify the major astrological influence driving a particular stock or commodity. It is then necessary to identify the resultant rate of vibration and to forecast how future astrological influences will impact this rate of vibration.“By my method I can determine the vibration of each stock and by also taking certain time values into consideration I can in the majority of cases tell exactly what the stock will do under given conditions” (Ticker interview).