Martian development

Aug 27, 2020
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I have tried to post this several times!

1,
Could Mars, although bombarded and irradiated have a 'life layer' layer and an intermittent 'strata' of a precursor of life?

Without the density differential of crust to water soaked basalt was the planet unable to subduct and the large shield volcano Olympus Mons, together with the other smaller volcanos be evidence that the planet, unable to subduct.


Therefore seafloor spreading could not occur. The planet unable to subduct was therefore, unable to evolve.

Also a rigid crust may have contributed to the failure of the magnetic field.



2,

Earth has two planetary 'escorts' as it were, Venus and Mars. Earth is is a life bearing planet and [ just a thought] would other planets with life on them have escorts also?


Should we therefore look for trios of planets when trying yo find life sustaining planets.
 
Nov 12, 2020
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It would seem that using a trio of planets as a search criteria is an excellent idea to try. I realize that random happenings may actually determine whether a planet could/can evolve life; however, our current challenge is just finding "Earth like" planets.
 
Aug 27, 2020
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Thank you Snorrie and Amenoum,

These are the whole notes I wrote, ( I was so fed up with being rejected I only sent a precis)

I read that jarosite has been found on Mars, now if water was on the the Martian surface ( Amazonian Period)is it possible that possible that life or a possible precourser to life might still

be found beneath the Martian surface?

Mars has been bombarded and irradiated also, it's magnetic field faded until, non existent with no magnetic field , the planets atmosphere dissipated and, its seas evaporated off.

with no atmospheric pressure our own Earths seas would be lost too.


The large shield volcano Olympus Mons may be a sign of failed subduction as the Martian crust is quite uniform in density i.e. no heavier water soaked seawater basalt on as on the Earth.


Do we need a magnetic field and, subduction for evolution?


1,Question - without the density differential of crust to basalt, would volcanism have fully developed with seafloor spreading and, might this be a factor in the failure of the Martian

magnetic field?



2,Earth has two planetary escort's as it were, Venus and Mars. Earth is a life bearing planet and ( just a thought)might other planets with life on them also have 'escorts' Therefore

should we be searching for trios of planets when trying to find life sustaining planets



3, Is it possible that on some planets and even large asteroids there is a life precouser, a layer, maybe intermittent ,like strata 'film' lying deep enough so as not to be irradiated, ready

to develop and and evolve into some more advanced life form? If and when conditions became conducive to life?


Thank you and very best wishes from Marj.
 
Nov 12, 2020
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My opinion: a magnetic field similar in intensity to Earth's, plate tectonics, subduction and volcanic activity, an abundance of chemically laced water, continual solar energy , a changing climate /temperature and sheer random events with "luck" produce conditions conducive to life and the Evolutionary process of life itself on Earth. Basically, life needs a solar system and planets as a crucible. The instance of any life form, (as we define life), is a randomized mechanical process of which we are the ultimate, so far, beneficiaries. The fact that Earth is the 3rd planet from the Sun, has two planet escorts and supports life, is a "marker" for Earth like planet searches. I think that our fortunate distribution of rock, chemicals, water, etc is a function of our proximity to the Sun when it "turned on", and the subsequent accretion chaos the followed for a billion years. Now here's the cynical bit. Given the fantastical probability of random events producing complex life, I think that we are the most "advanced" life form within the visible Universe, (13.7 bly radius). In fact, we're the only sapient hominin life form. I will celebrate being proven wrong.
 
May 10, 2021
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According to my theories, there is no luck or randomness involved, non-development of life on Earth would be a defect, rather than life being a coincidence.
Strong magnetic field on surface is needed for cultivation of complex life but not for extremophiles.
 
Aug 27, 2020
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Thank you both.

Forgive me for not replying sooner but, the gentlemen laying turfs on the lawn cut through our T.V. and internet cable !

Yes you are probably both right and, I hope some of what I've written is right also .

I of course may be wrong!

Once again, thank you both for your reply's.

have a good weekend,

Marj.
 
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Jan 27, 2020
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I have tried to post this several times!

1,
Could Mars, although bombarded and irradiated have a 'life layer' layer and an intermittent 'strata' of a precursor of life?

Without the density differential of crust to water soaked basalt was the planet unable to subduct and the large shield volcano Olympus Mons, together with the other smaller volcanos be evidence that the planet, unable to subduct.


Therefore seafloor spreading could not occur. The planet unable to subduct was therefore, unable to evolve.

Also a rigid crust may have contributed to the failure of the magnetic field.



2,

Earth has two planetary 'escorts' as it were, Venus and Mars. Earth is is a life bearing planet and [ just a thought] would other planets with life on them have escorts also?


Should we therefore look for trios of planets when trying yo find life sustaining planets.
Don't forget that the Earth also has the largest moon in relation to its size, our jolly old Mr. Moon, in the solar system.

new map of the moon.jpg

With a diameter of 3,474 km, the Moon is 27% the size of the Earth, whose own diameter is 12,742 km. A moon this large helps sweep up incoming astronomical objects, thanks to its own gravity and its proximity to the Earth, that might otherwise intercept the Earth with deleterious results for nascent life. A quick look at the Moon's surface shows the cratering from this process which occurred primarily in the late bombardment period.
Hartmann352
 
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