Uploaded by 1veritasium on Feb 22, 2011

"People have a lot of different ideas about what gravity is: a downward force that stops you from flying off into space, an attraction smaller objects experience towards larger objects, or a mutual attraction between all masses. It is the last of these ideas that best reflects a scientific conception of gravity."

Watch the full episode. See more Circus.

Newton's Explanation of Gravity

Gravity explanation

Gravity for kids

Bill Nye - a gravity demonstration

I'm a victim of gravity

What is gravity?

Grover's Rowboat

Master of the Universe: Stephen Hawking Theory Evidence

Uploaded by 1veritasium on Mar 3, 2011

"If you drop a heavy object and a light object simultaneously, which one will reach the ground first? A lot of people will say the heavy object, but what about those who know both will land at the same time? What do they think? Some believe both objects have the same gravitational pull on them and/or both fall to the ground with the same constant speed. Neither of these things is true, however. The force is greater on the heavy object and both objects accelerate at the same rate as they approach the earth, i.e. they both speed up but at the same rate."