Water on the ground does not come from comets – Gazeta Wyborcza

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Water (Kostiantyn Fastov / 123RF)

                  
                  
                  

                  
             

             
         
     
   
   
   
 
 
 
 

Contrary to previous hypotheses studies indicate that the water from basalt rocks appeared on Earth from the very beginning of our planet. This means that you do not bring her the comet during the "big bombardment".

 
 
 
 
 
 
 
 
 
 
 
 
 
                          
 

                 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

         

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Researchers at the University of Hawaii at Manoa explored the basalt cliffs of Baffin Island, the largest island in the Arctic Archipelago and the fifth largest in the world. The results show that the water from the rock occurred on Earth since the beginning of our planet. The study was published Friday in the journal 'Science'.

The team, headed by Lydia Hallis with UH NASA Astrobiology Institute (UHNAI), currently an intern at the University of Glasgow in Scotland, used to study ion microprobe. Scientists have studied the tiny fragments of glass contained in these rocks, and detected therein small amounts of water. They found a ratio of the amount of hydrogen for deuterium in the found water.

hydrogen nucleus is composed of a single proton, and deuterium is also the proton neutron (by which deuterium has a mass twice that of the ordinary hydrogen). Deuterium occurs naturally in nature, but in seawater is it very little. It is known that the ratio of hydrogen to deuterium in the water on other bodies in our solar system may be slightly different from the Earth.

- The rocks of Baffin Island were collected in 1985. Scientists have so much time on their thorough research. It is known that contain ingredients from the deep mantle - explains Dr. Lydia Hallis.

As the researcher explains, during his way to the surface rocks have not been contaminated with the rocks Earth's crust. Previous studies have shown that this area in the Arctic has remained intact since the formation of the Earth. These are some of the most primitive rocks on the surface of our planet, and contained in their water gives clues about the early history of the Earth.

It turned out that the water in the rocks of Baffin Island has very little deuterium, which suggests that he did not reach the Earth after having our globe is already formed and cooled. Probably the molecules of this water comes from the origins of our solar system - with the dust disk around the sun, which formed the planets, including Earth.

Earlier studies have suggested that water on Earth may have come from comets that struck in Earth when called. the great bombing shortly after it was founded, our globe.

Source: PAP - Science in Poland

         

         

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                               The fact that the water was at the beginning of the formation of our planet probably does not exclude the possibility that some cosmic snowball oberwaliśmy later.
                             
                           
                         

  
   
   
   
   
  
  

   
   

   

 
 
 

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