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PostPosted: Tue Oct 03, 2017 4:33 pm 
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Darwin's hypothesis about life arising in "little warm ponds" might now have become fact. Scientists now claim that meteorites splashing into warm puddles, bonded molecules to form RNA molecules that became the first genetic code for life. Scientists believe the event occured some 4 billion years ago.
Their findings are published in the journal "Proceedings of the National Academy of Science. The researchers at MacMaster University in Canada and the Max Planck Institute in Germany claim to have proved their theory through extensive calculations.
Fed Pearce, the study's lead author, said: "No one has actually run the calculation before. This is a pretty big beginning. It's pretty exciting. That's the Holy Grail of experimental-origins-of-life chemistry."
Co-author, Ralph Pudritz, added: " Because there are so many inputs from so many fields, it's amazing that it all hangs together. Each step led very naturally to the next. To have them all lead to a clear picture in the end is saying there's something right about this."
A previous theory was that space dust could have contained the source of the nucleotides necessary for life, but the researchers say that, although space dust did contain the right sort of materials, they weren't in a high enough concentration.
Next year the researchers hope to test their theory by replicating the pre-life conditions in a sealed laboratory.

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PostPosted: Tue Oct 03, 2017 9:17 pm 
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My 2 year old granddaughter loves splashing in puddles. It must be a kind of subconscious
return-to-the-puddle thing. I wonder if the life starting meteorites were wearing yellow wellies.
Blob


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PostPosted: Thu Jan 11, 2018 5:29 pm 
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A team of global researchers, including scientists from the Open University, has discovered amino acids, hydrocarbons and water - the ingredients for life - in the halite ( salt-containing ) crystals of two 4.5 billion-years-old meteorites that fell to Earth in 1998. At that time the technology for detecting trace amino acids wasn't available
The research is published in "Science Advances". The new data seems to support the results from Nasa's Dawn spacecraft that suggests that the organic compounds for life might be present on some asteroids, including Ceres.

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Last edited by brian livesey on Sat Jan 13, 2018 3:10 pm, edited 1 time in total.

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PostPosted: Fri Jan 12, 2018 6:35 am 
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Panspermia has alway's been one of my pet theories, of how life started.
I believe that LIFE on our planet was helped by the impact of meteorites and comets, during the late heavy bombardment.

This news is very interesting.

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PostPosted: Mon Jan 15, 2018 12:29 pm 
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Let us assume life on earth did originate from meteorites.
Would this suggest any other life in our Universe originated the same way ?
Since I myself tend to think that the Universe is infinite then I think there may be numerous life forms elsewhere. However, it is still debatable whether we (ie humans) will ever know ?
Perhaps fortunately the way things are going I think it likely humans will become extinct relatively soon.
Up until recently I thought Buddhism to be a peaceful organisation, but not anymore.
So it now seems even they are far from perfect.
Eskimos may be nearer human perfection (?). But even they kill fish (I think).
I personally now think (in my infinitely sized Universe) there must be plenty of life elsewhere (other than just on Earth) however it will be a tragedy if humans ever get beyond "our" solar system.
Best of luck for 2018 from Cliff


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PostPosted: Mon Jan 22, 2018 8:32 am 
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I'm in a very bad mood today.
The answer is "NO!!!!"
The question is rather like "Is there water on Mars?"
The answer to which is - "Yes there is, no there isn't, yes there is, no there isn ..................."
Best wishes from Cliff


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