A
Brief
History
of
Gravity


Home   What is Gravity?   Galileo   Kepler   Newton   Einstein   Zero Gravity   Interesting Facts   Bibliography


What is Gravity?

Simply put, gravity is
a force of attraction that pulls two objects together.
It is an invisible force that depends on the mass of each object as well as the distance between each objects' center.1

We experience Earth's gravity all the time.  In fact, it is the force that holds the entire universe together.2

Gravity is among the four fundamental interactions found in nature,
which includes electromagnetism, the
strong nuclear force, and the weak nuclear force.3

The following pages provide a brief history of the major scientists
who have contributed to the understanding and science of gravity.