timeline of life on earth/development of sentience

Can we have a thread to discuss theories,models of how Life emerged on earth? the geological history,continental drift,ice ages etc.
basically, "macro-history of biological entities".
Bonus points for discussion on possible microbial life on other planets.

  1. 2 weeks ago
    Anonymous

    Cool Worlds has several videos dedicated to the probabilities involved in life and sentience emerging in the universe

    https://www.youtube.com/c/CoolWorldsLab/videos

  2. 2 weeks ago
    Anonymous

    hydrothermal vents, man

    • 2 weeks ago
      Anonymous

      We love hydrothermal vents folks even adore them

      Dont sleep on the cold seeps tho

  3. 2 weeks ago
    Anonymous

    The basic timeline is
    >earth forms
    >~300m years later earth is still uninhabitable to life
    >~300m years later we see the first signs of life
    The period of "uninhabitability" could be shorter or longer, and life was obviously around since before we see the first still preserved signs.
    This tells us that "life" formed extremely quickly, almost as soon as the necessary chemistry became possible.
    >~2,000m years later the first "multicellular" (read: bacteria mat) life appears
    >~1,500m years later, the cambrian explosion, the first complex life emerges
    >~500m years later, today
    This suggests true multicellular life and complex animals are extremely difficult and unlikely to develop, compared to simple forms of life.
    It took only ~300,000,000 years, give or take, for honest to god LIFE to appear on this earth out of some hot soup, yet it took ~3,500,000,000 years for that life to form complex animals.

    If we ever find alien life, it's likely to be very simple compared to life on earth.

    • 2 weeks ago
      Anonymous

      >If we ever find alien life, it's likely to be very simple compared to life on earth.
      Is that supposed to be a bad thing? It cucks zoologists and botanists so it's good in my book.

      • 2 weeks ago
        Anonymous

        Why do you want to see zoologists and botanists cucked anon
        >did someone steal your oneitis

  4. 2 weeks ago
    Anonymous

    if there's life here than there MUST be another form somewhere else in the universe
    it'd be depressing if there isn't
    think about it, some horrifying creature with tentacles and 3 mouths may be also pondering if he's alone in the universe RIGHT NOW

    • 2 weeks ago
      Anonymous

      If thise creatures come here I'm gonna fuck one.
      In every mouth.

  5. 3 weeks ago
    Anonymous

    Would be cool to see the opinion of Wauf on the RNA world hypothesis.

    Also shadow biosphere theories go crazzzyyy
    https://en.m.wikipedia.org/wiki/Shadow_biosphere

    • 2 weeks ago
      Anonymous

      >https://en.m.wikipedia.org/wiki/Shadow_biosphere
      so am i to understand that the idea is there are forms of life yet undiscovered because they are made of a chemical composition we would never expect to be anything but inert? like silicone or rock based life?

      personally, i assume we got roadside picnic'd for that initial spark of setting up double helix strands. its amazing to me how people will simultaneously go "i love science" and be absolutely dogmatic about spontaneous evolution and not give a single shit about the origin of how molecules managed to be some complexly self replicating.

      • 2 weeks ago
        Anonymous

        >roadside picnic'd
        what?

        • 2 weeks ago
          Anonymous

          the book roadside picnic? its the book that video game stalker was based on. aliens stop and essentially leave this anomalous zone with all this crazy shit but its literally just their detritus left over from a brief "roadside picnic". its incomprehensibly powerful to us.

          so like maybe a more advanced form of life accidentally kicked off the spark of life by leaving some shit that zapped molecules into shape and start on the path of evolution.

          • 2 weeks ago
            Anonymous

            huh that sounds like a cool scifi book. thanks. I didn't know stalker was based on anything.

      • 2 weeks ago
        Anonymous

        Ya you p much summed it up in the first paragraph. Desert varnish is supposedly one of the possible examples. I could see a shadow biosphere in the earths crust.

  6. 3 weeks ago
    Anonymous

    No, this board is for arguing about pitbulls, outdoor cats, and climate change. No exceptions

    • 2 weeks ago
      Anonymous

      Funnily enough, so are most of the other sfw boards.

  7. 3 weeks ago
    Anonymous

    https://www.bible.com/bible/1/GEN.1.KJV

    • 3 weeks ago
      Anonymous

      surely you could just google “evolution of life on earth”

      as for earlier brains we dunno, they don’t preserve well and you cant guess some things like neuron density, types, and arrangement.

      desert slave fanfiction

      totally made up and largely stolen from the early vedic faith and zoroaster

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