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    UFOs & Extraterrestrial Life

    nomadski
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    Post  nomadski Fri Feb 19, 2021 8:28 am

    Anyone wants to bet that this latest Mars mission will find no ancient bio-mass?  And why I say this?  Because, if conditions needed for life, have to be Earth like. Then if life emerged on Mars, same as Earth, then the period of planetary stability to allow micro- organisms to develop, should have lasted at least long enough for the emergence of multi-cellular organisms or large animals, leaving a fossil record. And there have been many Rovers looking closely at Mars Rocks, without spotting even a fossil of a plant. Do you care to bet? If you win, then the prize is that I will post a song of your choice in the music section. Or I might win  !

    https://en.m.wikipedia.org/wiki/History_of_life#:~:text=The%20history%20of%20life%20on,emerged%20prior%20to%203.7%20Ga.

    Very convinient for Mars magnetosphere to disappear, just at the right time to leave no larger animals or fossil records, and leave perhaps only invisible micro organisms needing a Rover of this type to be sent !
    starman
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    Post  starman Fri Feb 19, 2021 11:06 am

    nomadski wrote:
    And there have been many Rovers looking closely at Mars Rocks, without spotting even a fossil of a plant.

    I don't think mission planners ever expected to find anything more sophisticated than microbes. I doubt they'll find stromatolites. Mars was never really a good place to search for life and monies would've been better invested in exoplanet research. That said, I'm still glad Perseverence came down safely. Smile

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    GarryB
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    Post  GarryB Sat Feb 20, 2021 2:40 am

    Yeah... you can't just land anywhere on earth and find dinosaur bones in every rock you crack open... the very idea that the pathetically few rovers that have been sent to Mars along with the pathetic distances they travel and actually search is going to find evidence of prehistoric life there was a pipe dream.

    Mars is slightly further away from the Sun and is slightly smaller... two things that are going to make it colder, and an added factor is our moon... what is believed to be such an enormous impact would reset the heat clock back a bit by reheating the planet and adding a large amount of extra mass.

    One of the main reasons for our magnetosphere might be the fact that we have the cores of two protoplanets merged in to one... their might be an excessive amount of heavy elements in the core of the earth keeping things hot and molten which continues to drive our magnetic powered protection from space radiation.

    It would take decades of people searching through Mars rock to start to get some clues as to its history and where to start looking for fossils and potential evidence of remains.

    Mars and Earth have had an enormous amount of time to evolve life... life has started and stopped at least 6 times on Earth... what if it started once and didn't stop on Mars and developed to a much more advanced level than we see here on earth... we don't know...

    The most successful creature on Mars might have been fish based or insectoid, or it might have been able to fly... but they might not have gotten to the technology level Humans did before they lost most of their atmosphere... for all we know Venus might have had life too... in fact based on what we know now about microbial life both planets almost certainly did have some forms of life, the only question would be to ask to what level did it develop to before it was stopped by the current conditions.

    Our advances in designing robots and 3D printers means we should be able to launch a printer and a pile of raw materials and it can start by making mining equipment to explore the local environment for more potential raw materials for the 3D printers to use... it could build buildings for shelter for humans, and if it finds water ice it can start producing water reserves for hydrogen fuel and oxygen to breathe, and it can measure radiation levels and temperatures etc etc...

    By the time humans get sent there it should be nice and comfortable with reserves of fuel and air to breathe... imagine a CO2 scrubber that extracts the Carbon in solid form leaving oxygen... how handy would that be...
    kvs
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    Post  kvs Sat Feb 20, 2021 4:55 am

    Mars had the same 95% and higher CO2 atmosphere as Earth after its formation and it was much denser than today. It managed
    to cool off and precipitate liquid water forming most likely shallow oceans. But this state did not last since the gravity on Mars is
    too small (1/3 that of Earth and only twice that of the Earth's Moon). It bled the atmosphere and moisture into space from day
    one. So in some ways it is like Venus which lost its water to space and never formed surface water, but in contrast to Venus
    it did not have a locked in runaway warming regime.

    There is water in the Martian regolith, but it froze in less than a billion years. It took a bloody long time for life to emerge on Earth.
    The history of life beyond single cell species spans less than a billion years into the past on Earth (more like 580 million). Mars
    could have developed single cell life in its shallow oceans and this life could have survived as extremophiles in the deep where
    the volcanic activity would have kept the water liquid. However, even volcanism has wound down on Mars. This is the reason
    it has no organized magnetic field like the Earth since it lacks a geodynamo.

    https://mars.nasa.gov/news/453/scientists-say-mars-has-a-liquid-iron-core/

    The volume of Mars is 12% that of Earth, so the amount of Thorium and Uranium in its interior is much smaller. Also, it is likely
    even less than the volume scaling since there is a stratification of heavy elements with distance from the Sun. So it is pretty
    much certain that radioactive decay is not high enough to maintain the temperatures in the core seen on Earth (around 4-6
    thousand Kelvin). The iron core on Mars is not frozen solid, but it is not convecting enough to organize a coherent magnetic field.

    Expecting to find evidence of multicellular life on Mars is unreasonable. But there is likely evidence of single cell life in the
    rocks.

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    starman
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    Post  starman Sat Feb 20, 2021 11:02 am

    GarryB wrote:
    Mars is slightly further away from the Sun and is slightly smaller…

    Slightly smaller…. it's only a tenth as massive as Earth, about 10.7%. Compared to several known exoplanets it's a dinky nothing. Mars has long had a certain mystique, and this has led to an inordinate emphasis on the little world.


    Mars and Earth have had an enormous amount of time to evolve life…

    Unfortunately Mars froze just when life was beginning to appear here. The surface has been continuously frozen, essentially, since the end of noachian time. A  "warm, wet" Martian era is a myth.

    life has started and stopped at least 6 times on Earth... what if it started once and didn't stop on Mars and developed to a much more advanced level than we see here on earth... we don't know…

    Mass extinctions didn't stop life, but gave previously sidelined life new opportunities.

    The most successful creature on Mars might have been fish based or insectoid, or it might have been able to fly... but they might not have gotten to the technology level Humans did before they lost most of their atmosphere…

    Lol, with the possible exception of a few underground niches, life on Mars was stillborn.
    starman
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    Post  starman Sat Feb 20, 2021 11:12 am

    kvs wrote:
    The history of life beyond single cell species spans less than a billion years into the past on Earth (more like 580 million).

    IIRC one work, The Garden of Ediacara indicates multicellular life predated the Cambrian explosion but of course that was still long after the time when Mars froze...

    Expecting to find evidence of multicellular life on Mars is unreasonable.   But there is likely evidence of single cell life in the
    rocks.

    Not necessarily likely but possible.
    Tsavo Lion
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    Post  Tsavo Lion Wed Mar 03, 2021 3:05 am

    The truth that has been waiting for 74 years. The authorities officially admit the existence of a UFO



    Last edited by Tsavo Lion on Wed Mar 03, 2021 5:04 am; edited 1 time in total (Reason for editing : add link)
    starman
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    Post  starman Wed Mar 03, 2021 10:57 am

    Governments have long admitted there were some UFOs ( flying objects they supposedly couldn't identify) but never formally, officially admitted ET is here.
    Tsavo Lion
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    Post  Tsavo Lion Thu Mar 11, 2021 5:44 am

    For thousands of years, people have gazed into the mysterious disk of the moon.
    Wondered about the origin of the satellite, dreamed of setting foot on the surface, we imagine the lunar inhabitants. And then came the era when dreams began to come true. Trying to get ahead of each other, the space powers rushed to the moon. We flew around it, photographed the invisible side, and with the help of automatic machines delivered samples of lunar soil to Earth. And finally - the moment of truth: earthlings walk on the surface of the yellow planet. The plans include even more exciting accomplishments: lunar settlements, launch sites for deep space exploration. And all of a sudden, all projects suddenly collapse.
    Moon. Secret Zone
    starman
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    Post  starman Thu Mar 11, 2021 11:09 am

    Tsavo Lion wrote:[i]For thousands of years, people have gazed into the mysterious disk of the moon.
    Wondered about the origin of the satellite, dreamed of setting foot on the surface, we imagine the lunar inhabitants. And then came the era when dreams began to come true. Trying to get ahead of each other, the space powers rushed to the moon. We flew around it, photographed the invisible side, and with the help of automatic machines delivered samples of lunar soil to Earth. And finally - the moment of truth: earthlings walk on the surface of the yellow planet. The plans include even more exciting accomplishments: lunar settlements, launch sites for deep space exploration. And all of a sudden, all projects suddenly collapse.

    Don't know Russian but if this invokes ETs or some conspiracy to explain the paucity of lunar missions after the last Apollo landing in '72, I don't buy it. Essentially, lunar missions ceased because of democracy. However good a longterm investment lunar colonization might've been, the public preferred its tax money be spent on social programs of more immediate benefit.
    Tsavo Lion
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    Post  Tsavo Lion Mon Mar 15, 2021 9:43 pm

    https://phys.org/news/2021-03-life-jupiter-moons.html
    starman
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    Post  starman Tue Mar 16, 2021 11:06 am

    Europa may have plenty of liquid water, and energy from tidal action. But does it have the requisite biogenic elements like carbon?
    Tsavo Lion
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    Post  Tsavo Lion Sun Mar 28, 2021 6:29 am

    NASA Mission to Venus in 1978 May Have Detected Phosphine, a Gas Related to Life
    starman
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    Post  starman Sun Mar 28, 2021 12:06 pm

    Some research suggests the purported phosphine is sulphur dioxide.
    Tsavo Lion
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    Post  Tsavo Lion Wed Apr 07, 2021 7:59 am

    https://www.nbcnews.com/news/us-news/drones-swarmed-u-s-warships-are-still-unidentified-navy-chief-n1263115

    https://scitechdaily.com/size-of-raindrops-help-identify-potentially-habitable-planets-outside-our-solar-system/
    starman
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    Post  starman Thu Apr 08, 2021 12:30 pm

    Even dinky Mars have have had rain early in its history, perhaps 4.3 billion years ago, when it still had an appreciable atmosphere. Some time ago, a lander detected snow  on Mars. It was just a few bits but it shows even now precipitation is possible.


    Last edited by starman on Wed Apr 14, 2021 11:50 am; edited 1 time in total
    Tsavo Lion
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    Post  Tsavo Lion Tue Apr 13, 2021 9:21 pm

    Did alien UFOs swarm US Navy destroyers?

    It wouldn't surprise me if Russia or China released those UAVs from their subs off the W. Coast.
    GarryB
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    Post  GarryB Wed Apr 14, 2021 5:28 am

    More like that batch of magic mushrooms was more potent than what they usually get...
    starman
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    Post  starman Wed Apr 14, 2021 11:52 am

    Tsavo Lion wrote:
    It wouldn't surprise me if Russia or China released those UAVs from their subs off the W. Coast.

    The USN can't identify foreign drones and considers them UAP?
    Tsavo Lion
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    Post  Tsavo Lion Wed Apr 14, 2021 6:17 pm

    Maybe they IDed them, even by process of elimination, but don't want to admit it. Recall that earlier incidents with F-18s also occurred in the same general area.
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    Post  Tsavo Lion Fri Apr 16, 2021 11:15 pm

    starman
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    Post  starman Sat Apr 17, 2021 11:43 am

    USOs are far from the only alien encounters experienced by the Russians. There have been a plethora of humanoid cases, such as. the one at Voronezh. But the "Russian Roswell" is not credible.
    Tsavo Lion
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    Post  Tsavo Lion Tue Apr 20, 2021 2:09 am

    https://scitechdaily.com/a-cross-disciplinary-approach-is-essential-to-finding-life-on-other-worlds/
    starman
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    Post  starman Wed Apr 21, 2021 12:09 pm

    It's nice to hear of all the recent success in Mars exploration. As far as the search for life goes, however, exoplanets are a much better investment. Mars has long has a certain mystique, and has gotten funding out of all proportion to its actual promise.
    George1
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    Post  George1 Mon May 03, 2021 12:32 am


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