Clearly we didn't learn much from the first planet we messed up.
Mars' atmosphere is dominated by carbon dioxide (CO₂) at a concentration of 96%. Oxygen is only 0.13%, compared with 21% in Earth's atmosphere.
Moxie is able to strip oxygen atoms from CO₂ molecules, which are made up of one carbon atom and two oxygen atoms. The waste product is carbon monoxide, which is vented to the Martian atmosphere.
www.bbc.com/news/science-environment-56844601
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