How Do We Know The Universe Is Flat? Have you ever wondered how astrophysicists know that the universe is flat? Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts 50 Debunked Science Misconceptions Will Make You Less Dumb How Scientists See Through Walls Using Particles From Space Bees can understand zero. Can you? Here’s how much taller humans have gotten in the last 100 years Electric Rides of the Future Why do taxpayers pay billions for football stadiums?