Which organization is standardly recognized for accepting the 100-kilometer demarcation for defining space?

Answer

Fédération Aéronautique Internationale (FAI)

The Fédération Aéronautique Internationale, often referred to by its acronym FAI, is the specific governing body noted for establishing and maintaining the 100-kilometer mark as the general, internationally accepted standard for defining the boundary of outer space. While national agencies like NASA and the USAF use a lower metric for their operational purposes (astronaut wings), the FAI's adoption of the 100 km figure cemented it as the authoritative standard used worldwide for regulatory, legal, and general aerospace discussions.

Which organization is standardly recognized for accepting the 100-kilometer demarcation for defining space?

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