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If the deep marine hydrothermal setting was the site for the origin of life, then abiogenesis could have happened as early as 4.0-4.2 Gya. If life evolved in the ocean at depths of more than ten meters, it would have been shielded both from impacts and the then high levels of ultraviolet radiation from the sun.
However, given that O 2 is a stronger absorber than CO 2, it is possible that O 2 might have an effect in situations where CO 2 is a smaller constituent in the atmosphere. [22] At such high levels, O 2 may start to have a noticeable effect on UV transmission, but at abiogenesis it is unlikely that high levels were achieved given a strong ...
A scenario is a set of related concepts pertinent to the origin of life (abiogenesis), such as the iron-sulfur world. Many alternative abiogenesis scenarios have been proposed by scientists in a variety of fields from the 1950s onwards in an attempt to explain how the complex mechanisms of life could have come into existence. These include ...
He poses the question whether in the times of ultimate expansion of the Universe with extremely low density of matter some structures could exist that can support the life of the entities he calls the "Diffuse Ones". He also discussed the possibility of life without sunlight/starlight, e.g., on the surface of brown dwarfs.
In 2020, it was announced that Google's AlphaFold, a neural network based on DeepMind artificial intelligence, is capable of predicting a protein's final shape based solely on its amino-acid chain with an accuracy of around 90% on a test sample of proteins used by the team.
Sidney Walter Fox (24 March 1912 – 10 August 1998) was a Los Angeles-born biochemist responsible for discoveries on the origins of biological systems. Fox explored the synthesis of amino acids from inorganic molecules, the synthesis of proteinous amino acids and amino acid polymers called "proteinoids" from inorganic molecules and thermal energy, and created what he thought was the world's ...
Abiogenesis is the a natural process by which life arises from non-living matter, Or to emphasize the historical question of how it happened on Earth: Abiogenesis is the natural process by which life arises arose from non-living matter, It's not your or my place to temper what we feel to be an overreaching on the part of the reliable sources.
Stanley Lloyd Miller (March 7, 1930 – May 20, 2007) was an American chemist who made important experiments concerning the origin of life by demonstrating that a wide range of vital organic compounds can be synthesized by fairly simple chemical processes from inorganic substances.