Origem da Vida: Nova Descoberta discute: Fundo de Oceanos ou Lagos na Superficie?

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Baseado no artigo ( ver meus comentarios postados no artigo e copiados abaixo):

Phys.ORG

Oldest evidence of life on land found in 3.48-billion-year-old Australian rocks

May 9, 2017

https://phys.org/news/2017-05-oldest-evidence-life-billion-year-old-australian.html?utm_source=nwletter&utm_medium=email&utm_campaign=daily-nwletter

Fossil evidence of early life has been discovered by UNSW scientists in 3.48 billion year old hot spring deposits in the Pilbara of Western Australia – pushing back by 3 billion years the earliest known existence of inhabited terrestrial hot springs on Earth.

Previously, the world’s oldest evidence for microbial on land came from 2.7- 2.9 billion year old deposits in South Africa containing organic matter-rich ancient soils.

“Our exciting findings don’t just extend back the record of life living in by 3 billion years, they indicate that life was inhabiting the land much earlier than previously thought, by up to about 580 million years,” says study first author, UNSW PhD candidate, Tara Djokic.

“This may have implications for an origin of life in freshwater hot springs on land, rather than the more widely discussed idea that life developed in the ocean and adapted to land later.”

Scientists are considering two hypotheses regarding the origin of life. Either that it began in deep sea hydrothermal vents, or alternatively that it began on land in a version of Charles Darwin’s “warm little pond”. ( read the article, link above)

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Morelli  – posted 5/9/2017
The land surface hypothesis is more plausible for life’s origins than the deep oceans, because abiogenesis needed sun’s energy. There are seeds for life everywhere inside galaxies because these seeds are galaxies’ genome. The destiny of any seed is the quality of the place it falls. But there is a big difference between biological systems and other systems non-carbon based. It is possible other kinds of “life” based on every element which the atomic number be multiple of seven in the periodic table, because these elements repeats all properties of carbon. (These are suggestions from Matrix/DNA Theory)
starfart – 5/9/2017
This looks like a marvelous find. I have no doubts that the materials examined exhibit good evidence for microbial life in the surface hot spring setting. However, I don’t see why this finding should dismiss seafloor hydrothermal vents as a potential setting for the origin of life. Its a bit puzzling that evaporate deposits on surface hot springs are stressed as a ‘concentrator’ of complex biogenic material as if undersea hydrothermal precipitate processes aren’t capable of doing that as well. In the end, though, it wouldn’t surprise me in the least if it turns out that either or both settings figured prominently in the origin of life. This isn’t an either-or dichotomy. Both hydrothermal vents and surface hot springs have the same important suite of properties for biogenesis…and they were no doubt equally ubiquitous on the early Earth
Morelli – 5/9/2017

“Both hydrothermal vents and surface hot springs have the same important suite of properties for biogenesis…and they were no doubt equally ubiquitous on the early Earth.”

Maybe you have found the exactly point. Matrix/DNA Theory has suggested that the first cell system ( aka, living thing) needed 50% of a planet’s nucleus energy and 50% of a star energy. The planet’s energy is able to build the primordial molecules and some organelles ( less mitochondria and chloroplasts) and no DNA, only RNA. The last elements are build with the concourse of a star energy. Than, it is possible that life began at thermal vents but was finished at land surface.
We are based on our theoretical model of a seed for life, which is a kind of astronomical genome at microscopic level.

 

 

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