These Incredible Gravity Defying Things Will Make You Look Twice

Gravity holds your feet down to the ground because the mass of the planet exerts a gravitational pull on the mass of your body. In fact, gravity stirs up an attraction between any two objects in the universe: moons, dust motes, coyotes -- you name it. Wherever you find matter, you'll find gravity. You could never travel to a gravity-free planet, only one with greater or lesser mass resulting in greater or lesser gravity.