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#abiogenesis — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #abiogenesis, aggregated by home.social.

  1. And you thought your busted up old Samsung kept you home on Friday night

    Bobby's friends literally disappear every time he comes near

    #abiogenesis #biology #gotthemetherblues

  2. “A strand of RNA just 45 nucleotides long has been discovered to perform two key reactions required for self-replication. The molecule, which is a kind of RNA enzyme, offers a tantalising clue towards understanding the origin of life, namely how non-living chemistry on prebiotic Earth started to self-replicate and evolve.”

    #Abiogenesis #RNA #Biochemistry chemistryworld.com/news/self-s

  3. The last universal common ancestor lived off #hydrogen gas and carbon dioxide, boasted a genome as large as that of some modern #bacteria, and already had an immune system

    Its genomic complexity suggests that it was one of many lineages living about 4.2 billion years ago, a turbulent time early in Earth’s history and long thought too harsh for life to flourish.

    #Life evolved from a simple replicator into something resembling modern microbes very quickly.

    #abiogenesis
    quantamagazine.org/all-life-on

  4. Ancient #Earth was nothing like our current home.

    It was a much more hostile place; rich in metallic iron with an #atmosphere containing hydrogen and methane.

    These molecules contain an important clue to how #life was initially formed.

    When exposed to solar #ultraviolet radiation, they undergo a chemical reaction that produces organics: precursors to essential biomolecules, such as amino acids and nucleic acids.

    #astrobiology #abiogenesis
    phys.org/news/2024-10-life-beg

  5. The nature of the last universal common ancestor (#LUCA) have been the subject of vigorous debate across diverse disciplines.

    Age estimates for LUCA are usually based on the fossil record, varying with every reinterpretation while #metabolism has proven equally contentious.

    New results indicate that LUCA lived ~4.2 Ga ago and had a genome of at least 2.5 Mb, encoding around 2600 #proteins.

    #evolution #abiogenesis
    nature.com/articles/s41559-024

  6. Within a few billion years atoms formed, then stars formed from atoms, galaxies formed from stars and gas, our Sun formed, soon followed by our Earth, about 4.6 billion years ago.

    #Abiogenesis is the natural process by which life arises from non-living matter, such as simple organic compounds. The prevailing scientific hypothesis is that the transition from non-living to living entities on Earth was not a single event, but a process of increasing complexity.

    knowledgezone.co.in/kbits/62ce

  7. What implications does the #flare frequency have on #ozone depletion and #abiogenesis in #exoplanets orbiting M dwarfs?

    Even when #stars have a sufficiently high rate of energetic flares, such that they are likely to have a positive impact on abiogenesis on Earth-like #planets, there might simultaneously be significant ozone depletion.

    #astronomy #astrobiology
    link.springer.com/article/10.1

  8. 97yo genie #HHPattee published a chapter just few months ago in #OpenSemiotics vol4, in which expands & pushes his theoretical argumentation framework, embracing the recent biology research on #abiogenesis & spontaneous #folding

    top quote:

    » #RNATieClub did not discover the “mechanism” of the code because there was no #mechanism
    The code is symbolic or “chemically gratuitous” in #Monod words
    There was nothing to discover from laws or logical thinking «

    academia.edu/114451075/Symbol_

    #biosemiotics

  9. 97yo genie #HHPattee published a chapter just few months ago in #OpenSemiotics vol4, in which expands & pushes his theoretical argumentation framework, embracing the recent biology research on #abiogenesis & spontaneous #folding

    top quote:

    » #RNATieClub did not discover the “mechanism” of the code because there was no #mechanism
    The code is symbolic or “chemically gratuitous” in #Monod words
    There was nothing to discover from laws or logical thinking «

    academia.edu/114451075/Symbol_

    #biosemiotics

  10. 97yo genie #HHPattee published a chapter just few months ago in #OpenSemiotics vol4, in which expands & pushes his theoretical argumentation framework, embracing the recent biology research on #abiogenesis & spontaneous #folding

    top quote:

    » #RNATieClub did not discover the “mechanism” of the code because there was no #mechanism
    The code is symbolic or “chemically gratuitous” in #Monod words
    There was nothing to discover from laws or logical thinking «

    academia.edu/114451075/Symbol_

    #biosemiotics