There is no trace of phosphine in Venus's atmosphere.

Sofia-telescope found no evidence of life on Venus. And there is no phosphine in that planet's atmosphere. So that thing means that Venus is dead. 

But the question is why the first telescope saw phosphine in the Venu's clouds and then that phosphine is gone. The wrong calibration might be the problem. But how telescope couldn't detect that the source of phosphine is in Earth's atmosphere? There was not very much phosphine in Venus. 

Image Sofia-telescope

So maybe the reason for that trace was some chemical reaction where some volcano released phosphorous into Venus's atmosphere. And then things like lightning caused a reaction where carbon monoxide reacted with phosphorous. 

There is a possibility that the lightning destroyed CO or CO^2 molecules. And then phosphorous could interact with hydrogen forming PH3. So there are no lifeforms in Venus's clouds. 

https://scitechdaily.com/sofia-finds-no-phosphine-a-potential-sign-of-life-on-venus/

https://www.universetoday.com/110007/budget-2015-flying-sofia-telescope-to-be-shelved-for-higher-priority-programs-like-cassini/

"Researchers have uncovered evidence that vast phytoplankton blooms may be lurking beneath Antarctic ice." (ScitechDaily.com/Hidden Ecosystems? NASA’s New Evidence of Vast Life Lurking Beneath Antarctic Ice)

Antarctica is the perfect place for researching isolated ecosystems. 

There is the possibility that hidden ecosystems are lurking inside Antarctica's ice. 

But a search for extraterrestrial lifeforms continues. And Antarctica offers a good place to research the closed ecosystems. When researchers are collecting data from the lakes deep inside the Antarctic ice. 

Also from the ice itself, they can make models of what kind of lifeforms could live in some distant water moon's ocean. Antarctica is also a large freezer. And there can be found the remnants of the first organisms on Earth. 

The thing is that Antarctica is one of the most isolated and sterile areas in the world. There are unique species in those lakes that are not anywhere else. And those organisms can give information about the closed and cold ecosystems. 

Antarctica is hostile to almost all lifeforms that we know. But deep inside ice is lifeforms that don't need sunlight or straight contact with sunlight. Those organisms hunt for organisms that have contact with sunlight. And in that model, the tiniest and most producing organisms are living near the ice's surface. After that the other organisms. That is higher in the food chain are deeper under the ice.

The big question about those closed ecosystems is this. Does the nutrient fall to those lakes through the ice? Or are those lake ecosystems closed? In the last case, all nutrients surround the icy lake. That kind of ecosystem gets its energy from the black smokers or volcanic heat. That kind of ecosystem is always interesting. 

https://scitechdaily.com/hidden-ecosystems-nasas-new-evidence-of-vast-life-lurking-beneath-antarctic-ice/

Organic molecules on Mars' surface are causing a question was there some ancient lifeforms?

Image 0) Mars as we see it today.

Image 1) Mars' climate change. "Researchers in the University of Arizona Department of Ecology and Evolutionary Biology simulated the conditions hypothetical lifeforms would have encountered on Mars 4 billion years ago when liquid water was likely present in abundance on the red planet. Credit: ESO/M. Kornmess" (ScitechDaily.com/Ancient Mars May Have Been Teeming With Life, Until It Drove Climate Change That Caused Its Demise)

The modern theory about life on Mars goes like this: there were ancient life forms. But some of the kinds of meteorite impacts destroyed that primitive life.  Those meteor impacts melted the Red Plant's lithosphere at least twice. And they also transfer the trajectory of that planet. During those impacts, the red planet lost its atmosphere. 

But the problem with those primitive life forms is: are they endemically formed on Mars, or did they come from somewhere else? The lifeforms might not active anymore, but there is the possibility the researchers can isolate the RNA or DNA of those primitive bacteria. If those genomes are isolated. The genome sequences of that fossil bacteria can decode those sequences that can compile with bacteria that are found on Earth. 

And then those sequences can tell were those bacteria anaerobic or aerobic. Also, if there are similar sequences that make bacteria strings. That thing tells if those bacteria swam in some kind of liquid. But when we must realize one thing. Before mitochondria formed. The first protobacteria used volcanic temperature as an energy source. 

But there are many uncertain things about life on Mars. If those lifeforms are only in a couple of positions on the red planet. That tells those bacteria came from somewhere else. And solving that thing scientists must make a careful and comprehensive research about the origin of those lifeforms. 

By the way... 

Image 2)

Image 3)

Do you remember "cities on Mars" and "the Face"? The first thing is a series of triangular forms. The face is proven the result of some kind of shadow. The last thing uncovered a pastille-looking form. Or maybe the original face was some kind of sand structure that has vanished. Image 2 is the Viking image from the red planet. And image 3 is the new image from the same place. 

Image 4 is the "city of Cydonia". 

Those things are still interesting. And those things mean that we must continue also searching for remnants of intelligent lifeforms. And one of the most exciting visions is the possibility to find an abandoned base from somewhere in our solar system. The fact is that those strange-looking geological formations are formed after Mars lost its core. 

And I believe that this upheaval happened at the same time when Mars lost its magnetosphere. That loss of magnetosphere caused the solar wind to blow that planet's atmosphere away.

Loss of the magnetic field can happen because of the melting of the entire planet. In that case entire planet melted to lava. And then the giant turbulence in the lave destroyed its nucleus. The reason for that could be meteorite impact or some kind of electromagnetic radiation. 

There is a possibility that poorly sterilized probes transferred some of those bacteria to Mars. But if no match with the genetic material of those bacteria and bacteria on Earth means, those bacteria came from somewhere else. 

https://bigthink.com/life/organic-molecules-life-mars/

https://scitechdaily.com/ancient-mars-may-have-been-teeming-with-life-until-it-drove-climate-change-that-caused-its-demise/

https://scitechdaily.com/life-on-mars-ancient-bacteria-might-lurk-beneath-mars-surface/

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

Image 0) https://en.wikipedia.org/wiki/Mars

Image 1) https://scitechdaily.com/ancient-mars-may-have-been-teeming-with-life-until-it-drove-climate-change-that-caused-its-demise/

Images 2,3,4) https://nssdc.gsfc.nasa.gov/planetary/mgs_cydonia.html