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Space Exploration

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    $\begingroup$ Apollo throughout the entire program ran on almost pure oxygen atmosphere, The changes were to construction and materials, but the risk of fire was permanent... and if an astronaut tried to light a cigarette, it would have burned all to ash in the pure oxygen faster than one could take a swig of smoke. $\endgroup$
    – SF.
    Commented Jan 23, 2023 at 8:32
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    $\begingroup$ Where astronauts usually work it can be soddin' inconvenient to step outside for a coupla puffs... $\endgroup$
    – A. I. Breveleri
    Commented Jan 23, 2023 at 21:33
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    $\begingroup$ It was the 1960's, everybody smoked, and those that didn't still got the equivalent second-hand because indoor rooms were more cigarette smoke than breathable air $\endgroup$
    – Dragongeek
    Commented Jan 25, 2023 at 18:49
  • $\begingroup$ For themselves or others? For themselves, well, it part of the reason that Glenn wasn't first human in space. $\endgroup$
    – Starship
    Commented Mar 12, 2023 at 1:01