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Commercial astronaut
A commercial astronaut is a person trained to command, pilot, or serve as a crew member of a privately funded spacecraft. This is distinct from an otherwise non-government astronaut (such as Charlie Walker) who fly while representing a non-government corporation but with funding and/or training coming from government sources.
==Criteria==
The criteria for determining who has achieved human spaceflight vary. The FAI defines spaceflight as any flight over of altitude. In the United States, professional, military, and commercial astronauts who travel above an altitude of are eligible to be awarded astronaut wings. Until 2003, professional space travelers were sponsored and trained exclusively by governments, whether by the military or by civilian space agencies. However, with the first sub-orbital flight of the privately funded Scaled Composites Tier One in 2004, the commercial astronaut category was created.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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