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 This plane could cross the Atlantic in 3.5 hours. Why did it fail? World’s Fastest Human Calculator – Scott Flansburg Can We Genetically Engineer Humans for Space? The coin flip conundrum – Po-Shen Loh Did You Know Planes Were Infested With Bugs? What Counts as the World’s Largest Clock?