It has long been suspected that the cloud decks of Venus offer an aqueous habitat where microorganisms can grow and flourish,” the authors write. Everything life needs is there: “Carbon dioxide, sulfuric acid compounds, and ultraviolet (UV) light could give microbes food and energy
Could there be life in Venus atmosphere?
Although life as we know it is almost certainly impossible in the harsh conditions on the surface of Venus, it’s possible that it could survive in the Venusian atmosphere. Although Venus’ lower atmosphere contains toxic clouds of sulfuric acid, at higher levels the conditions are much less deadly
The type of life the authors envision aligns with other thinking about Venusian atmospheric life. “The archetype living thing <being> the spherical hydrogen gasbag isopycnic organism,” they state. (Isopycnic means constant density; the other terms are self-explanatory
Venus is shrouded in clouds so thick we can only see the surface with radar. The clouds reach all the way around the globe. The cloud base is about 47 km (29 miles) from the surface, where the temperature is about 100 C (212 F.) At equatorial and mid-latitudes, they extend up to a 74 km (46 miles) altitude, and at the poles, they extend up to about 65 km (40 miles.)
There’s a precedent for life existing in the clouds. It happens here on Earth, where scientists have observed bacteria, pollen, and even algae at altitudes as high as 15 km (9.3 miles.) There’s even evidence of bacteria growing in droplets in a super-cooled cloud high in the Alps. The understanding is that these organisms were carried aloft by wind, evaporation, eruptions, or even meteor impacts. But there’s an important difference between Earth’s and Venus’ clouds
Has microbial life been found on Venus?
The possibility of life on Venus is a subject of interest in astrobiology due to Venus’ proximity and similarities to Earth. To date, no definitive evidence has been found of past or present life there
Can any bacteria survive Venus?
Highly unlikely as the surface temperature is around 864 degrees F and 462 C. This is hot enough to melt lead, so there’s no water. In the cooler upper atmosphere it’s just possible bacteria could survive, but not likely
How could an organism survive on Venus?
If life did exist there, it would have to withstand temperatures hot enough to melt lead, and survive with no liquid water. There are some scientists that believe life might be hiding in the sulphurous clouds of Venus, just under the lower cloud deck of the planet. There we might find some Earth-like conditions
What would an organism need to survive on Venus?
To live on the surface of Venus a creature needs the ability to survive the temperature of 867*F and sulfuric acidic atmosphere. Possibly an extremophile of some kind could tolerate that hellish environment
Why did Venus lose its water?
At Venus, the solar wind strikes the upper atmosphere and carries off particles into space. Planetary scientists think that the planet has lost part of its water in this way over the four and a half thousand million years since the planet’s birth. Water is a key molecule on Earth because it makes life possible
Venus is way too hot, it has a crushing atmosphere, it is a CO2 atmosphere—as will many planets that we discover, and it has a nasty sulfuric layer of acid in the air near the surface. Where do you start your terraforming?
Right now if you add water, it would immediately become water vapor and would quickly be lost to the solar wind—first the hydrogen ions part of it, and then gradually the oxygen component. Now without water we can’t get rid of that poisonous CO2 atmosphere. Water is an essential component of the photosynthetic process. So it would seem that we can’t start with water in our terraforming
Is it possible that some form of life may exist in the cloud tops of the planet Venus
It is an intriguing possibility that some form of life could exist in the cloud tops of Venus. The upper atmosphere of Venus has been suggested as a potential habitat for microbial life due to the presence of water droplets and the possibility of more moderate temperatures and pressures compared to the planet’s surface. However, this is still a topic of ongoing scientific research and debate. Further exploration and study of Venus will be essential to better understand the potential for life in its atmosphere
With our current technology we can build a Venus settlement in the Venus atmosphere within the next 5–30 years
Yes, Venus is referred to as Earth’s “Sister Planet”. In addition to being almost the same size, Venus and Earth are both terrestrial planets with similar in mass and have very similar compositions. As a neighboring planet to Earth, Venus also orbits the Sun within its habitable zone or the “Goldilocks Zone”. And given its similarities to Earth, many scientists believe Venus would be a prime candidate for terraforming. But of course, there are many key difference between the planets that make Venus uninhabitable.
The atmosphere of Venus is very dense. It is about 90 times more massive than Earth’s atmosphere, containing about 96% of Carbon-di-oxide and 3% nitrogen and a very small amount of water vapour – like 0.003%. On top of this, Venus also has a thick layer of sulfuric acid clouds. The atmospheric pressure at the surface is 93 bar – roughly the pressure found 900 meters under the sea here on Earth. (the pressure at Sea level on Earth is 1.01325 bar, translating to little over 1 kg per sq.cm.)
Considering what we know about the key ingredients for life’s formation on Earth, here are three explanations for how this process may have occurred on our sister planet.
The recent discovery of phosphine in the atmosphere of Venus is exciting, as it may serve as a potential sign of life (among other possible explanations).
The researchers, who published their findings in Nature Astronomy, couldn’t really explain how the phosphine got there.
They explored all conceivable possibilities, including lightning, volcanoes, and even delivery by meteorites. But each source they modeled couldn’t produce the amount of phosphine detected.
Most phosphine in Earth’s atmosphere is produced by living microbes. So the possibility of life on Venus producing phosphine can’t be ignore
The ingredients for life (as we know it)
Understanding how life formed on Earth not only helps us understand our own origins, but could also provide insight into the key ingredients needed for life, as we know it, to form.
The details around the origins of life on Earth are still shrouded in mystery, with multiple competing scientific theories. But most theories include a common set of environmental conditions considered vital for life. These are:
Liquid water
Water is needed to dissolve the molecules needed for life, to facilitate their chemical reactions. Although other solvents (such as methane) have been suggested to potentially support life, water is most likely. This is because it can dissolve a huge range of different moleculesand is found throughout the universe.
Mild temperatures
Temperatures higher than 122°C destroy most complex organic molecules. This would make it almost impossible for carbon-based life to form in very hot environments.
Venus’s milder upper atmosphere, however, has temperatures low enough for water droplets to form and thus could potentially be suitable for the formation of life
Also, the constant falling of water droplets from Venus’s atmosphere down to its extremely hot surface would destroy any unprotected organic molecules in the droplets.
Beyond this, with no surfaces or mineral grains in the Venusian atmosphere on which organic molecules could concentrate, any chemical building blocks for life would be scattered through a diluted atmosphere – making it incredibly difficult for life to form
The planets of our inner solar system have been documented to exchange materials in the past. When meteorites crash into a planet, they can send that planet’s rocks hurtling into space where they occasionally intersect with the orbits of other planets.
If this happened between Earth and Venus at some point, the rocks from Earth may have contained microbial life that could have adapted to Venus’s highly acidic clouds (similar to Earth’s acid-resistant bacteria
A truly alien explanation
The third explanation to consider is that a truly alien form of life (life as we don’tknow it) could have formed on Venus’s 400°C (750°F) surface and survives there to this day.
Such a foreign life probably wouldn’t be carbon-based, as nearly all complex carbon molecules break down at extreme temperatures.
Although carbon-based life produces phosphine on Earth, it’s impossible to say only carbon-based life can produce phosphine. Therefore, even if totally alien life exists on Venus, it may produce molecules that are still recognizable as a potential sign of life.
Could we live in the clouds of Venus?
Although life as we know it is almost certainly impossible in the harsh conditions on the surface of Venus, it’s possible that it could survive in the Venusian atmosphere. Although Venus’ lower atmosphere contains toxic clouds of sulfuric acid, at higher levels the conditions are much less deadly
Terraforming Venus is theoretically possible, but it would take 1 thousands of years and require us to harvest a significant portion of the sun’s energy. Who knows where technology will be 100 years from now, never mind 1000, but I don’t see Cenus being terraformed any time soon.
There have been other options discussed, however. In the upper levels of the Venusian atmosphere, atmospheric pressure and temperatures are similar to those found on Earth. If we could create a stable floating colony (imagine Cloud City from Star Wars but much, much smaller), we could theoretically walk around with only an oxygen supply. Unless it was raining. And then your skin would melt off your bones.
Mars presents its own host of problems, but it would be much, much, much, MUCH easier to terraform Mars than Venus
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