Why Is The Sky Blue? – Do You Know? Finally, a simple answer to every child’s question! Paolo Di Trapani, professor of optics from the University of Insubria, explains why the sky is blue. Share this video if it helped you to understand! Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts This Fluoride Battery Could Mean Phone Batteries That Last a Week Why Haven’t Meteoroids Killed Us All? Questions No One Knows the Answer To Since Mass Exists, Can There Be Negative Mass? Do You Know What Lagrange Points Are? Why Don’t Birds Have Vertical Tails Like Airplanes?