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 If There Was A 7,964 Mile Deep Hole How NASA Reinvented The Wheel – Shape Memory Alloys What really happens to the plastic you throw away The Big Bang Explained by Animation Better Than Ever How China’s Pollution Hurts Other Countries Slowing Down A Stock Exchange With 38 Miles Of Cable