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 Immortal Cells Turn 96 Hacker Kevin Mitnick on password managers and online safety What put the bang in the big bang? Making sense of irrational numbers The Largest Electrical Current in the Universe What if You Were Born in Space?