Why Do Planes Fly So High? We’ve all been flying high ever since the development of the jet engine in the mid-1950s. But why were jets were designed to fly at those high altitudes in the first place? Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Did You Know When the Sun Sets it is Slightly Green? Can you solve “Einstein’s Riddle”? US Air Force own Hyperloop Can Technology Ever Make Us Truly Happy? – Transhumanism Asteroids: Are They a Threat? Why Do We Blink?