# universal law of gravitation

## Definitions

### General Science

- noun the law of gravitation stating that every body in the universe exerts an attraction on every other, proportional to their masses multiplied together divided by the square of the distance between them

### Astronomy

- (written asThe law of
*Universal Law of Gravitation*)__gravitation__set out by Newton and applying to every object in the__universe__. It states that every body in the universe exerts an attraction on every other, proportional to the product of their masses (their masses multiplied together) divided by the square of the distance between them. The gravitational constant G gives the__force__between any pair of objects whose masses and separation are known, and equals 6.672 x 10^{-11}kg^{-1}m^{3}s^{-2}. There has been much speculation among cosmologists about the possibility that G varies over time, which if true would have a severe effect on our ideas about the past evolution and future development of the universe.