There's Mounting Confirmation that Venus was once Habitable - Physics-Astronomy.org

There's Mounting Confirmation that Venus was once Habitable

With its acid thunderclouds, scorching outside and atmospheric force that would crush your bones, the oppressive hellscape of Venus makes it one of the majority uninviting places in the whole Solar System.
But it’s looking more and extra likely that when life first evolve on Earth, Venus might have really been a viable holiday destination.
"Both planets probably enjoy warm liquid water oceans in contact with rock and with natural molecules undergoing chemical development in those oceans," David Grinspoon at the Planetary Science organization in Tucson, Arizona told Aviva Rutkin at New Scientist.
"As far as we understand at current, those are the requirements for the origin of life."
Scientists have been propose for years now that Venus might not have forever been the hottest planet in the Solar System.

Back in 2010, researchers have pointed to the fact that Earth and Venus are surprisingly similar in size, density, and work of art, their close nearness suggesting that they were probably formed using the same base resources.
"Venus also has an strangely high ratio of deuterium to hydrogen atoms, a sign that it once housed a considerable amount of water, mysteriously misplaced over time," says Rutkin.
Now, the container for Venus’s more friendly past just got even stronger, with latest climate models showing that up to 3 billion years ago, Venus could have had mild, Earth-like temperature and liquid oceans.
The team, led by Michael Way from the NASA Goddard Institute for Space Studies, simulated four versions of early Venus, tweaking each one slightly by sure factors such as the length of a day and the amount of energy it conventional from the Sun.
As the four models evolved over billions of years, the majority promising one not just boasted moderate temperatures, dense cloud cover that would have secluded the surface from the Sun’s harsh emission, and now and then even snow, it would have remained habitable until just 715 million years ago.
But there’s one large caveat: for this model to produce habitable setting for a 2-billion-year stretch, Venus had to have been spinning as slowly as it is today - something that researchers are yet to show. And since Earth's rotation has been progressively slowing down, some researchers have argued that Venus did in information spin faster in the past.
"If Venus was spinning more fast, all bets are off," one of the team, Michael Way, from the NASA Goddard organization for Space Studies, told Maddie Stone at Gizmodo. But, under the right situation, "You get temperatures nearly like Earth. That’s remarkable."
Now, I don’t want to get every "aliens!" up in here, but a couple of billion years is an awful stretched time to be habitable, so if these models are accurate, there’s a possibility that life could have evolved on Venus at that time, presently like it did on Earth.
Unfortunately, the Venus of today isn’t precisely the easiest place to search for clues of long-lost life.
As Nola Taylor Redd over at Space.com explain, Venus is the hottest planet in the Solar System, and it’s covered in clouds made from sulphuric acid that spew forth the strangest lightning ever detect.
If you were to place on the surface of Venus, you’d skill air about 90 times heavier than Earth's atmosphere and pressures similar to diving 3,000 feet (914 metres) beneath the ocean.
So how did Venus go from creature Earth’s habitable twin to being Earth’s evil twin?
"It’s one of the big mystery about Venus. How did it get so different from Earth when it seems likely to have in progress so similarly?" Grinspoon told New Scientist. "The question becomes richer when you consider astrobiology, the possibility that Venus and Earth were very similar throughout the time of the origin of life on Earth."
The team says the only way we're leaving to get to the bottom of if Venus was once habitable, how it got so hellish, and if life did really have a chance to evolve there, is to actually go there - amazing that NASA is previously considering.

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