The Top 5 Countries with the Most Astronaut Career Time in Space


  Country Time in space
1
USSR/Russia 16,858 days
2
USA 9,380 days
3
France 384 days
4
Germany 310 days
5
Canada 122 days
Sources:  Various
List Notes: 
  
  1. Although Kazakhstan gained most of its space flight experience as a member of the USSR, if we were to consider it separately, it would be 4th on the list with 349 days.
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