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All articles tagged with space
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space walkers
Posted on  : September 11, 2017, 5:27 am
fly to the moon. The criteria for what constitutes human spaceflight vary. The Fédération Aéronautique Internationale (FAI) Sporting Code for astronautics recognizes only flights that exceed an altitude of 100 kilometers (62 mi).[4] In the United States, professional, military, and commercial astronauts who travel above an altitude of 50 miles (80 km)[5] are awarded astronaut wings.
Author : vishnu namboothiri  |  
Category : sude
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Tagged Keywords: space
space walkers
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