The criteria for what constitutes human spaceflight vary. The FAI defines spaceflight as any flight over . In the United States professional, military, and commercial astronauts who travel above an altitude of are awarded astronaut wings . This article follows the FAI definition of spaceflight.
The criteria for what constitutes human spaceflight vary. The Fédération Aéronautique Internationale defines spaceflight as any flight over . In the United States professional, military, and commercial astronauts who travel above an altitude of are awarded United States Astronaut Badge . This article follows the FAI definition of spaceflight.
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FAI
Fédération Aéronautique Internationale
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astronaut wings
United States Astronaut Badge