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 What Happens to a Helium Balloon in Freefall? How plastic microbeads are causing big problems The Irresistible Rise of AliExpress How Many Smells Can You Smell? Why We Live Where We Do – Urban Geography Should you trust unanimous decisions?