About: The Kármán line is an attempt to define a boundary between Earth’s atmosphere and outer space. It is set at the altitude at which Earth’s atmosphere becomes too thin to support aeronautical flight.
Detail: The Kármán line, 62 miles above ground, is the boundary of space recognized by the Fédération Aéronautique Internationale (FAI), a Swiss organization that sets global rules for air sports. The Karman Line as originally defined lies between 70 and 90 km, not at 100 km.