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Liquid Water under Mars' South Pole

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  • Liquid Water under Mars' South Pole

    From Physics World:

    " A radar instrument on a European mission to Mars has discovered liquid water beneath the red planet’s south polar ice cap, raising intriguing possibilities for both astrobiology and studies of Mars’ past climate. The discovery of liquid water on Mars has huge consequences for the search for life on the red planet, and could also unveil characteristics of the ancient environment in which it formed before the water was covered with ice....<snip>...While the exact temperature of the discovered liquid water is unknown, laboratory experiments have shown that in some conditions briny water can remain liquid down to –70°C. "

    "The exact sciences also start from the assumption that in the end it will always be possible to understand nature, even in every new field of experience, but that we make no a priori assumptions about the meaning of the word "understand"."

    Heisenberg
    .....................

    "The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they reveal knowledge." ( Psalm 19:1-2 )

  • #2
    Thanks for all the science news you bring to our group!
    Regards, HRG.

    "The universe doesn't care what happens to its inhabitants, but its inhabitants do" (Tyrrho).

    Comment


    • #3
      Originally posted by HRG View Post
      Thanks for all the science news you bring to our group!
      Although the forum is slow compared to others, the subject has potential for some good discussions. - You are welcome HRG.

      I understand that it was the Italians ( ESA's Mars Express ) and their 15 year old ground penetrating radar that led to the discovery of a possible brine water lake under the surface of Mars' south pole.

      Here is a cross section sample:



      " This image shows an example radar profile for one of 29 orbits over the 200 x 200 km study region in the south polar region of Mars. The bright horizontal feature at the top corresponds to the icy surface of Mars. Layers of the south polar layered deposits – layers of ice and dust – are seen to a depth of about 1.5 km. Below is a base layer that in some areas is even much brighter than the surface reflections, while in other places is rather diffuse. The brightest reflections from the base layer – close to the centre of this image – are centred around 193°E/81°S in all intersecting orbits, outlining a well-defined, 20 km wide subsurface anomaly that is interpreted as a pond of liquid water. "

      Liquid state water reflects radar very well and produces the brightest signal.
      Last edited by inertia; 07-25-18, 11:02 PM.
      "The exact sciences also start from the assumption that in the end it will always be possible to understand nature, even in every new field of experience, but that we make no a priori assumptions about the meaning of the word "understand"."

      Heisenberg
      .....................

      "The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they reveal knowledge." ( Psalm 19:1-2 )

      Comment


      • #4
        Liquid water share does increase the odds of finding life, mind you at 1.5 km deep, its not going to be easy to find out.
        "Life is not measured by the number of breaths we take, but by the moments that take our breath away"

        Comment


        • #5
          Originally posted by inertia View Post

          Although the forum is slow compared to others, the subject has potential for some good discussions. - You are welcome HRG.

          I understand that it was the Italians ( ESA's Mars Express ) and their 15 year old ground penetrating radar that led to the discovery of a possible brine water lake under the surface of Mars' south pole.

          Here is a cross section sample:



          " This image shows an example radar profile for one of 29 orbits over the 200 x 200 km study region in the south polar region of Mars. The bright horizontal feature at the top corresponds to the icy surface of Mars. Layers of the south polar layered deposits – layers of ice and dust – are seen to a depth of about 1.5 km. Below is a base layer that in some areas is even much brighter than the surface reflections, while in other places is rather diffuse. The brightest reflections from the base layer – close to the centre of this image – are centred around 193°E/81°S in all intersecting orbits, outlining a well-defined, 20 km wide subsurface anomaly that is interpreted as a pond of liquid water. "

          Liquid state water reflects radar very well and produces the brightest signal.
          Well, imagine how lively this section would become if life was found on another planet!

          Comment


          • #6
            Originally posted by 4tune8chance View Post
            Liquid water share does increase the odds of finding life, mind you at 1.5 km deep, its not going to be easy to find out.
            "Difficult" is only another component of exploration. https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole

            Exploration produces incentive to develop the technology to complete an unusual task at hand. In turn, invention produces useful devices for human needs.
            "The exact sciences also start from the assumption that in the end it will always be possible to understand nature, even in every new field of experience, but that we make no a priori assumptions about the meaning of the word "understand"."

            Heisenberg
            .....................

            "The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they reveal knowledge." ( Psalm 19:1-2 )

            Comment

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