Newton discovered the law of universal gravitation has complex, the long-term successional variation process. In this paper some preparations and efforts before Newton’s universal gravitation was provided, such as Ptolemaous’ geocentric theory, Copernicus’ heliocentric system and the contributions of Tycho、Kepler and Galileo. Any more, this paper dealswith the formation of the Law of Universal Gravitation. It points out that the force is in inverse proportion to the square of the distance between any two interacting bodies while it’s in direct proportion to the product of the masses of two interacting bodies.
Newton’s universal gravitation not only had a broad application scope in theory, but also in practice engineering, based as one of the bottommost low in nature.
Key words : The law of universal gravitation；The movement of celestial bodies；Isaac Newton
