Did You Know on Instagram: "The classic bowling ball vs. feathers experiment shows how gravity works when air resistance is removed. On Earth, a feather normally falls slowly because air pushes against it while a heavy ball drops quickly. But in a giant vacuum chamber, like the famous demonstration done by physicist Brian Cox, all the air is pumped out so nothing can slow the objects down. When released together, the bowling ball and feathers fall at exactly the same rate and hit the ground at t