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 Massive Blackhole Death Ray Da Vinci’s Vitruvian Man Tilt Brush: Painting from a new perspective The Most Radioactive Places on Earth Boomerang In Zero Gravity World's Deepest Diving Pool