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[–] 17 points 3 days ago (8 children)

I heard it's nitrogen, which I think releases co² during the production process. You're right though, could be worse; they could've used hypergolic thrusters.

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  • [–] 4 points 2 days ago (6 children)

    Do you mean nitrous (N2O)? Straight up N2 shouldn’t be changing to CO2 unless some very interesting chemistry is happening, haha.

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  • [–] 14 points 2 days ago (4 children)

    They said during the production process, not on release.

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  • [–] 6 points 2 days ago (2 children)

    I'm pretty sure the "production" process is just compressing atmospheric air and separating out the other gases. The atmosphere is 78% nitrogen.

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  • [–] 5 points 2 days ago*

    I think what they mean is that when making liquid CO2 you use a cryo-cooler. That cooler condenses the gas out of the air. Air contains CO2 and nitrogen (plus some other stuff). The gases aren't created but rather just a state change. Cryo coolers also take energy to run.

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