Gravity
fundamental interaction affecting all matter / From Wikipedia, the free encyclopedia
Gravity, or gravitation is one of the fundamental forces of the universe. It is an attraction, or pull, between any two objects with mass. We discuss it in three parts:
- Everyday sense: the force which causes objects to fall to the ground
- Newton's laws: how gravity keeps the Solar System and most major astronomical objects together
- Einstein's theory of general relativity: the role of gravity in the universe
Some physicists think gravity is caused by gravitons, but they are still unsure.