カーマン・ライン
MW 18014 was the first man-made object to cross into outer space, as defined by the 100 km Kármán line. This particular altitude was not considered significant at the time; the Peenemünde rocket scientists rather celebrated the V-2 launch in October 1942, first to reach the thermosphere. After the war, the World Air Sports Federation (FAI) defined the boundary between Earth's atmosphere and outer space to be the Kármán line.