The gravitational force is the attractive force between two heavenly bodies which keeps them revolving around their respective orbits. All the planets have specific rate of motion in their orbits. The planets influence beings on earth in consonance with their rate of motion.
*Their number of satellites
Each planet has its unique influence. For example Moon is the planet nearest to earth, it is the only planet revolves round the earth, its speed is high as compared to other planets. So its influences on earth changes frequently. It is compared to human mind because of its tremendous speed. So it effects one’s thinking and emotional behavior. Moon’s has no atmosphere hence it makes the wavering of thought process. Most of the Moon’s surface is in solid rocks of uranium, titanium , iron and magnesium it denotes the high intrinsic values of a person. The temperature on Moon is between 370k to 125k so its represent the cold related diseases like cough, cold etc. Because of its nearness to earth its affects water element in human being. As a illuminate it represent left eye of a man. In astrology it is represented as a mother.