However, whether the "gravity" that? So far much effort has been undertaken to understand the phenomenon of gravity. History tells us, first, first conceived the idea of gravity and is described by the master Isaac Newton in Philosophiae Naturalis Principia Mathematica is often also called the Principia that first appeared in 1687 (although in fact the idea of gravity has been obtained 22 years earlier), among others, explain the law of universal gravitation in Besides the theory how the body moves in space and time. Law of universal gravitation to explain how objects interact attraction. The idea of universal gravitation law we may understand as follows, "every object in the universe is pulled toward all other objects by an increasingly powerful force with a larger mass objects, and with it close to one another." That is, every particle of matter that are in this universe mutual attraction to each other that the force of attraction is getting bigger when the distance is getting closer and content of the mass of each particle of such material and more.