How We Proved Earth Rotates Using a Giant Swinging Ball People have suspected that Earth rotates for thousands of years, but how did we first prove it? Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Einstein Might Have Been Wrong About Gravity… Here’s Why Why is it Dark at Night? How Are These Incredible RC Helicopter Stunts Possible? Left Turns On a Bike Require You to First Turn Right The Explosion that Transformed Astronomy What Is This Mysterious Triangle Photographed in Australia?