During a normal flight, the temperature outside the plane is cold enough to freeze you in minutes

If you’ve ever been on a plane, being outside at cruising altitude would kill you in a matter of minutes. The average temperature outside of a plane cabin is -60 degrees Fahrenheit, which is the equivalent of -51 degrees Celsius. This is cold enough to literally freeze your skin, putting you into a hypothermic state within minutes or even seconds of being in that temperature.