• Skyrmir@lemmy.world
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    3 days ago

    Except o2 is only produced in volume by a nova. Which isn’t happening on a planet.

    • sbird@sopuli.xyz
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      2 days ago

      A quick search shows that there’s many studies on abiotic ways to produce O2 in terrestrial planet. From good sources too, not just your random Joe. Hence, we need to look at other factors too, not just oxygen.