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 Why Planes Don’t Fly Faster The Mysterious Sealed Temple Door NO ONE Can Open Is it possible to create a perfect vacuum? Gender determination: More complicated than you thought The Zipf Mystery – Vsauce How Do We Measure Alien Intelligence?