Study suggests that Venus never had oceans or habitable conditions

A new study published in the journal Character and led by University researchers in Geneva, Switzerland, poured water into the boil of a search for life on Venus. He suggests that the closest neighbor has always been ours, from birth, an uninhabitable hot electronic hell.

Researchers led by Martin Turbet created performance simulations of these early versions of an electronic Earth’s electronic Venus, more about 4 billion years ago, when the surface 2 planets period over molten rock.

At that time, both operating system planets were supposed to contain water vapor only in the atmosphere, since heat prevented the water from rising. condense electronic occupy the surface. However, while the Earth could learn to cool, forming torrential rains that generated our oceans, d on Venus these conditions never arrived. Instead, the runaway greenhouse effect ended up causing the water molecules to be broken down electronically and lost to space over time. This is because the analysis of 2 isotopes of hydrogen (in essence, atomic variants that may have none, one or two neutrons in the nucleus, in addition to a lone proton) by d indicates a much greater presence of deuterium (one neutron) performs that simple hydrogen performs (without a nutron), compared to Earth.

The best way to explain this difference is that when seeing that molecules on water ze break down in the atmosphere as a result of ultraviolet light, the Sun performs a hydrogen (lighter ) escapes more into space than a (heavier) deuterium, creating this distortion.

The novelty was the demonstration about how this water can never have sony ericsson stabilized on the surface. Electronic suffering therefore operating system enthusiasts diesels possibilities about life on Vnus. Sony ericsson the planet never had habitable conditions, it is unlikely that it could have been at some point the stage for the emergence of microbes.

Furthermore, a study explains very well why Terra electronic Venus, about twin beginnings. , evolved in a different way, taking into account what operating system scientists call about the weak perform Sol paradox. It has to do with the fact that our star see, in the remote past, less bright period electronic emitted less radiation. This period is difficult to reconcile with the fact that the Earth has always learned and showed a planet with mild conditions, from a very early age, on a frosty planet because the Sun performs less brightly instead.

Simulations show That a weaker sun may have made the difference zero success for an Earth. Thanks to him, our planet was able to cool down to the point that operating system oceans condense, which would never have happened on Vnus something. one model only one model, electronic zero venusian case uncertainties come together with relative ignorance performs our planet. Turbet electronic colleagues emphasize that operating system data to be collected by the three missions now in the planning stages (two American, one European) can help to corroborate or refute their conclusions.

This column was published on Mondays, in Folha Corrida.

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