Due to the lack of convection, astronauts in free space flight must be surrounded by clouds of carbon dioxide all the time.

Due to the lack of convection, astronauts in free space flight must be surrounded by clouds of carbon dioxide all the time. How, then, is the possibility of breathing for astronauts ensured?

The gas exchange process is partly possible due to the phenomenon of diffusion. In addition, forced movement of gas masses is provided on board the spacecraft with the help of fans.

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