Monday , May 23 2022

Venus never had an ocean, could not support life: study



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Venus

Venus hides a lot of information that helps to better understand the Earth and the planets. This image is a compilation of data from NASA’s Magellan spacecraft and the pioneer Venus Orbiter. (Courtesy: NASA / JPL-Caltech) and nbsp

London: Previous studies have suggested that Venus may have its own liquid ocean, but a new study suggests this is not the case.

A team of astrophysicists led by the University of Geneva (UNIG) and the National Research Skills Center (NCCR) in Switzerland have discovered that there are really mild periods in our planet’s twins.

Using complex three-dimensional models of the atmosphere, like the scientists used to mimic the current climate and future evolution of the Earth, the team studied how the atmosphere of the two planets evolved over time and whether oceans could form in that process.

“Thanks to our simulations, we were able to show that climatic conditions did not allow water vapor to condense in Venus’ atmosphere,” said Martin Turbert, an astrophysicist and researcher in the Department of Astronomy at the Faculty of Science in Unig.

This means that the water in its atmosphere never loses its temperature enough to form raindrops on its surface. Instead, water existed as a gas in the atmosphere, and the oceans never formed.

“One of the main reasons for this is the formation of clouds on the planet at night. These clouds have a very strong greenhouse effect and prevent Venus from cooling as previously thought,” Turbert said.

The results are published in the journal Nature. Furthermore, imitations of astrophysicists have shown that the fate of Venus could easily befall Earth.

If the earth were a little closer to the sun or if the sun shone as brightly in its ‘youth’ as ​​it does today, our earth would be much different today.

The relatively weak radiation of the young sun may have allowed the earth to cool as the water that forms our oceans condenses.

It has always been considered a major obstacle to the appearance of life on Earth. The argument was that if the sun’s radiation was much weaker than it is today, it would turn the Earth into a life-threatening ice ball.

“But for a young, very hot planet, this faint sun may seem like a really hopeless opportunity,” the researchers said.

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