How Long Is One Second, Really? Do we really know how long a second is? The science behind how time is actually measured may prove you wrong. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Have Astronauts Ever Had Sex In Space? How Scientists See Through Walls Using Particles From Space Why Do We Need Earwax? Small Planes Over Big Oceans (ETOPS Explained) This Fluoride Battery Could Mean Phone Batteries That Last a Week Why an Entire Field of Psychology Is in Trouble