Scientists find possible signs of life on Venus

[Vod]

Even if life is found on Venus, doesn't mean it's alien life.   It could have been transplanted from earth.

https://en.wikipedia.org/wiki/Panspermia

If we find similar evidence on a planet in another solar system - that will be interesting!  Providing the planet is further than ejected rock/dust can travel in four billion years.

[Spendulus]

Even if life is found on Venus, doesn't mean it's alien life.   It could have been transplanted from earth.

https://en.wikipedia.org/wiki/Panspermia

If we find similar evidence on a planet in another solar system - that will be interesting!  Providing the planet is further than ejected rock/dust can travel in four billion years.

Okay, 'fess up. How's life on Venus?

[coins4commies]

To get to that conclusion, they have to set pre existing conditions that would allow liquid water on the surface. In other words, they have to set pre conditions that would create the desired outcome. But even then, it's a very weak assertion.

Sun output = 30% less --> Solar irradiance on Venus = 40% higher than current Earth. Do you really believe you'd have oceans here with 40% higher solar?

Actually, if they had oxygen in either Venus or Mars atmosphere, that would be a signal of life. But both have high co2, which indicates the opposite. All that's left to search for under category "life" is microbes that are anaerobic and/or live in high sulfur conditions.

Now let's go back to the headline. "Venus may once have been habitable."

Really? That "early 2 billion years" is a continual rain of asteroids, hellish conditions of continual volcanos... it's the planet becoming a planet, aggregating. So if it has a lot of water, that water becomes water vapor. Huge amounts of it, just like now Venus has huge amounts of co2.

In the absence of a magnetosphere, the solar winds would strip the H20 and other volatiles apart, and ultimately you'd be left with the tail end of the energy equation, CO2. And that's what you have on Venus.

With enough mass in the atmosphere (initially h20 if you like), the surface pressure would easily force water vapor into liquid form. That's a steam boiler, not an ocean. Evil Kneivel's rocket was just that, superheated steam.

Earth is by definition in the 'habitable zone'. Venus and Mars are not. Note that the known fact that Mars had ancient oceans is contrary to the hypothesis of an ancient dimmer sun. If anything, it would indicate an ancient stronger sun.

You are dead wrong.  Which climate denial blog did your numbers come from? Venus reflects 70% of the radiation that hits it as evident by its brightness in the sky.  The greenhouse effect is definitely why Venus is so hot.  The past is less clear but it could be that volcanism released massive amounts of gas into the atmosphere meaning the surface pressure increased over time.  (while Mars pressure decreased over time as the inner parts of the planet hardened.  All 3 planets are in the habitable zone.  If Venus and Mars swapped places, the trends we see on each planet would not significantly change.  

The total solar flux at the Venus orbit is 2622 ± 6 W/m2 (Moroz et al., 1985). Due to its high albedo the planet absorbs only 157 ± 6 W/m2 on average, less than that deposited on Earth (~240 W/m2), despite the fact that Venus is 30% closer to the Sun.

http://lasp.colorado.edu/~espoclass/ASTR_5835_2015_Readings_Notes/Titov_Et_Al-EVTP.pdf

As for the history.  Earth had life after about 1 billion years and photosynthesis after about 2 billion years.  Earth's oxygen accumulated because of photosynthesis.  If you visited earth in the first billion years of life, it would've been a mostly anearobic environment with marine life but oxygen levels were as low as Mars.

[BADecker]

Anybody can be a bit deranged. Even scientists. How ridiculous, searching for life on other planets! We really need to be looking for intelligence on Earth, right?

[Spendulus]

....
You are dead wrong.  Which climate denial blog did your numbers come from? Venus reflects 70% of the radiation that hits it as evident by its brightness in the sky.   ....

Venus is bright because it is enveloped by clouds of sulfuric acid, which are very bright and reflect light. Light doesn't even get down to the inner atmosphere of carbon dioxide, except indirectly.

Indirectly means re-emitted wavelengths.

....The greenhouse effect is definitely why Venus is so hot.  

First chapter 8th grade chemistry or phsyics, the gas equation sets this relation.

P = T

The weight of atmosphere is >90x that of earth. Now figure the resulting T.
The excess of actual T over this calculated T is the effect of any "greenhouse." You can see that any such effect is very minor. Not that it in any way corresponds to the theory of the "greenhouse effect" as promulgated for Earth.

As done on Earth, solar flux hitting Earth is used to calculate T in that micro environment. IIRC the "greenhouse effect" adds about 18C to that number. There is virtually zero solar flux hitting the ground of Venus.

Earth's oxygen accumulated because of photosynthesis.  If you visited earth in the first billion years of life, it would've been a mostly anearobic environment with marine life but oxygen levels were as low as Mars.

The planets have whatever oxygen they had from the very beginning, plus some added by comets, less some lost to space in the absence of a magnetosphere (Venus and Mars). Co2 is a likely place for O2 to go, h2 being stripped off and lost to space.

[Mauser]

According to The Guardian, scientists believe the discovery of a rare gas in the clouds of Venus could indicate signs of microbial life on the planet.

What do you think? Could this be the first evidence of extraterrestrial life?

This is great news, I like to read any news about astro physics. The universe is so big that there must be life out there in my opinion. With millions of stars and galaxies we just can't be the only planet with life.

But first of all we need a common understanding of extraterrestrial life, is it just some microbial life? Or something more advanced like us humans? Venus is such a hot planet which would make it very hard for anything to exist. It don't think we will find life on any planet around planet. Maybe in the past but not now anymore.

[Spendulus]

...
But first of all we need a common understanding of extraterrestrial life, is it just some microbial life? Or something more advanced like us humans? Venus is such a hot planet which would make it very hard for anything to exist. It don't think we will find life on any planet around planet. Maybe in the past but not now anymore.

Many of the essential activities of life as we know it, such as the formation of DNA and passage of things through cell walls, are based on a liquid water medium. Really they are based on a narrow range of temperatures.

To find life at say 700F even microbes, would be truly fascinating as it would be a study of something completely, utterly alien.

[target]

...
But first of all we need a common understanding of extraterrestrial life, is it just some microbial life? Or something more advanced like us humans? Venus is such a hot planet which would make it very hard for anything to exist. It don't think we will find life on any planet around planet. Maybe in the past but not now anymore.

Many of the essential activities of life as we know it, such as the formation of DNA and passage of things through cell walls, are based on a liquid water medium. Really they are based on a narrow range of temperatures.

To find life at say 700F even microbes, would be truly fascinating as it would be a study of something completely, utterly alien.

Scientist says a lot of things to make it like what they are doing are more interesting but didn't they all says Mars also have signs of life there including Jupiter and Satturn?
Basically all planets were already ebing assume to have once been a flourishing planet and for wahtever reason they're all wiped out and only written documents was that they all act bad and punished by the one true god. Its possible those aliens are the ones we though angels?

[Slow death]

Anybody can be a bit deranged. Even scientists. How ridiculous, searching for life on other planets! We really need to be looking for intelligence on Earth, right?

so you prefer that one day you wake up and run into this guy:



we need to know what's on other planets, maybe there are more beneficial things on other planets. The best way to be protected Is if we know what is on other planets. we have already seen how our weapons are capable of creating catastrophic destruction, now imagine if there are aliens with technology superior to ours? would you wake up and become a slave to this big-headed guy in this photo

[Spendulus]

Anybody can be a bit deranged. Even scientists. How ridiculous, searching for life on other planets! We really need to be looking for intelligence on Earth, right?

so you prefer that one day you wake up and run into this guy:



we need to know what's on other planets, maybe there are more beneficial things on other planets. The best way to be protected Is if we know what is on other planets. we have already seen how our weapons are capable of creating catastrophic destruction, now imagine if there are aliens with technology superior to ours? would you wake up and become a slave to this big-headed guy in this photo

I will take his ray gun away. I want it. You can't have it. Well I might let you borrow it.

[Vilagra]

This is just so exhilarating to think that there is microbial life completely different from what we are used to know. Just sit and think what it will evolve in! Will the evolved creation be like human?

[Spendulus]

This is just so exhilarating to think that there is microbial life completely different from what we are used to know. Just sit and think what it will evolve in! Will the evolved creation be like human?

It's the lizard people, but you can't tell them with their masks on.

[BADecker]

Forget Venus. We are still trying to go to the moon.

Check the links at the site... not the wiener roast at the launch site in the rocket blast. The links to other pages at the website below.


Bezos' Blue Origin to set record with launch testing NASA moon mission hardware

Blue Origin, the space company founded and funded by Amazon head Jeff Bezos, is planning to make its 13th trip to space on Thursday, using a New Shepard rocket that will be flying for the seventh time, which will set a record for rocket recycling.

Mission NS-13 will be carrying a dozen payload to the edge of space and back, including a lunar landing sensor demonstration that will test technologies for future moon missions as part of NASA's Artemis program.

The sensor will be the first payload to ride mounted to the exterior of New Shepard rather than inside its capsule.

SpaceX, another commercial space outfit headed by a famous billionaire in the form of Elon Musk, has so far used a single Falcon 9 booster up to six times. It's worth noting, though, that the Falcon 9 is a different class of rocket that is used for more technically complicated orbital missions.

A few of the other payloads on board this flight of New Shepard include a test of a new system to autonomously grow aquatic plants that could supplement a crew's diet and a new cooling system developed by NASA for spacecraft electronics.

NASA Tipping Point Partnership with Blue Origin to Test Precision Lunar Landing Technologies

https://www.youtube.com/watch?v=osloNmDYJlY&feature=emb_logo

[Artemis3]

this may be the first sign of other life that appears to exist beyond earth...

btw, I believe there is another life beyond the earth but our technology is still not able to reach them. I have the principle that in this vast solar system it is not possible only on earth to have life.

The "first sign" was some asteroid that came from Mars with alleged fossil prints. Its only a matter of time for more evidence to come from there from the many missions ongoing and planned. Venus was actually unexpected, but then again what could we possibly know about life in the universe?

Studying Venus is difficult due to the planet's environment, but i suspect more probes will head there to investigate about those interesting readings.

Your "principle" sounds a lot like the Fermi paradox, but i wouldn't limit the scope to this mere solar system.

Also don't forget the Solar System has 8 planets, and a whole bunch of satellites and dwarfs (and the asteroid belt, possible remains of planet. After Neptune the next celestial object is called Eris, yes, you read that right, Pluto comes after Eris. The solar system is incredibly huge, but its but a grain of sand in the vast universe. Earth would by like a sub atomic particle or something.

The moon is "meh" but several countries are visiting because its "close". Even Israel tried but couldn't quite brake properly and left a bunch of debris on its surface. I guess they'll try again later. If you want the best pictures of the moon, look at the Chinese Chang'e probes. Even SpaceX is planning to send tourists to fly by it. NASA is also revisiting, for some reason.

[Naida_BR]

It is very interesting but surprising as well.
I would not surprised if their is live in Venus. It would be very selfish for us (people) to believe that we are alone in this universe.
Personally, I hope that scientists will find life on Venus because this would be very revolutionary for the world and many missions would start going to other planets.

[samputin]

It is very interesting but surprising as well.
I would not surprised if their is live in Venus. It would be very selfish for us (people) to believe that we are alone in this universe.
Personally, I hope that scientists will find life on Venus because this would be very revolutionary for the world and many missions would start going to other planets.

Guess I was selfish once thinking that we're just the people in the universe.  But growing up, and being able to study physics and philosophy, questions start raising in my mind like, "What if there are indeed other creatures in this universe?" It's interesting to know if there are really creatures other than us in the universe.

[Dorodha]

It is very difficult to find the existence of Venus due to its close proximity to the solar system it has not yet developed into a habitable animal. The high temperatures on this planet are usually like hot ovens for melting lead. The temperature of Venus is 484 degrees Celsius the chances of life surviving at this temperature are extremely slim. Its atmospheric temperature is much higher.

[BADecker]

Jabut, think about all the forms of life that might exist.


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https://www.youtube.com/watch?v=EQG3I5efwWo

[TheCoinGrabber]

I'm skeptical about it. There could have been other processes that lead to the creation up there in the atmosphere (I'm no chemist though). If there were to be life in that planet though, the higher atmosphere is indeed the likely place to find them as the surface temperature is too high for life as we know it.

[CryptocurencyKing]

When it comes to the origin of life, it's always been about theories upon theories and less proven facts. I believe in science but not 100% nope, not at all as i am also religious and know some mystical stuffs do exist too.

Life could be found almost everywhere according to science if the nutrients necessary for survival is there. So, it's really all about the nutrients plus, there is a possibility of translocation of these organisms there due to continual visits by astronauts to these planets and considering how microbes reproduce copies of itself with the necessary nutrients then, yes! Of course life can be there. Buy the question is,
Do you see yourself going there?
What's it going to take to make it conducive for human habitation?
Will it be worth it?