kellyportillo11 kellyportillo11
  • 13-03-2018
  • Physics
contestada

what was perphaps the greatest challenge of human space flight?

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lillysmom1980
lillysmom1980 lillysmom1980
  • 13-03-2018
Space is more hostile to the human body.

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Аноним Аноним
  • 13-03-2018
the risk of human lifes
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