Re: [Space] Panspermia and the Campgaign
Quote:
Originally Posted by aesir23
One solution to this is to simply decide that there's an unknown mechanism by which certain patterns of evolution repeat themselves.
e.g. on every planet, some strands of the original extremophile bacteria (that have seeded so many planets) tend to evolve into photosynthetic plant life--whenever that happens, animals evolve to take advantage of the oxygen surplus and the potential food source represented by the autotrophs.
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Except that oxygenic photosynthesis is not the only kind by a long shot. It also created one of the worst global extinction events in earth's history. It's like turning modern oceans into bleach with how reactive O2 is compared to the early atmosphere of N2 and CO2.
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