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
https://astronomyandtechnology.blogspot.com/
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