BEIJING, Feb. 5 (Xinhuanet) -- How astronauts complete one of the most important hygienic tasks without gravity: washing hands. The Canadian Space Agency (CSA) astronaut Chris Hadfield was asked this question by a student during a video link with 200 grade school students from Ottawa.

Hadfield produces a pouch of no rinse body bath — a “special type of slightly soapy water” — to show the students how getting clean happens in zero gravity.

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