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Thread: Changing air composition on another planet

  1. #1 Changing air composition on another planet 
    Inb
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    Hello,
    Hypothetically speaking- if we would find another planet, the size of erth, with atmosphere as dense as earth's atmosphere is, and we would insert (in some hypothetical way) nitrogen, oxygen and co2 in the quantity they are found on erth, and (again in a hypothetical way) we would "get out" whatever gases are in that planet's atmospher. would it be possible to create an environment in which we could breathe?


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  3. #2  
    Brassica oleracea Strange's Avatar
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    Quote Originally Posted by Inb View Post
    Hello,
    Hypothetically speaking- if we would find another planet, the size of erth, with atmosphere as dense as earth's atmosphere is, and we would insert (in some hypothetical way) nitrogen, oxygen and co2 in the quantity they are found on erth, and (again in a hypothetical way) we would "get out" whatever gases are in that planet's atmospher. would it be possible to create an environment in which we could breathe?
    You seem to have answered your own question: if we could replace/change the atmosphere of a planet to one that we could breathe then, yes, we would be able to breathe.


    ei incumbit probatio qui dicit, non qui negat
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    Moderator Moderator Janus's Avatar
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    Well, you'd have a breathable atmosphere for a while, but unless you also have an ecology that includes something like plants to continually replenish the oxygen, it will slowly deplete. Even if there were no humans or animal life breathing that air, oxygen is very reactive and would tend to form compounds rather than remain as free oxygen.

    The whole concept of terraforming revolves around turning a non-habitable planet into an habitable one. But doing so would be a long, drawn out process.
    "Men are apt to mistake the strength of their feelings for the strength of their argument.
    The heated mind resents the chill touch & relentless scrutiny of logic"-W.E. Gladstone


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