Does the recent news by scientists of a comet containing a chemical building block of life furnish evidence that comets were responsible for life's origin on Earth?
In his book "In The Beginning" MIT scientist Dr. Walt Brown mentions some thoughts concerning comets (Please consult his book to review his biographical sources behind the footnotes. His book is free to access and read on-line).
"Comets may be the most dynamic, spectacular, variable, and mysterious bodies in the solar system. They even contain organic matter—including trace amounts of the amino acid glycine, a complex building block of life on earth.1 Early scientists concluded that the organic matter came from “decomposed organic bodies.”2 Today, a popular belief is that comets brought life to Earth. Instead, comets may have traces of life from Earth.3"
In the Earth's past there was powerful geological activity which could have easily spewed dirt and gigantic rocks, some possibly containing microbes, into outer space. Our meteors and comets may have actually originated from Earth. In fact NASA scientist, Dr. Kenneth Nealson, has claimed that such dirt and geological debris could have eventually reached even Mars. A Newsweek article of September 21, 1998, p.12 mentions exactly this possibility.
"We think there's about 7 million tons of earth soil sitting on Mars", says (evolutionist) Kenneth Nealson. "You have to consider the possibility that if we find life on Mars, it could have come from the Earth" [Weingarten, T., Newsweek, September 21, 1998, p.12].
Dr. Walt Brown in his book "In The Beginning" points out that during the great Genesis flood, as recorded in chapter 7 of Genesis in the Bible, the fountains of the deep (which lay under the earth) were let loose and could have easily spewed out millions of tons of rock and debris well into outer space.
Just having the building blocks of life will not result in a living cell. It would require millions of various building blocks coming together in a precise sequence, just like the letters in a sentence, to make a single cell.
In the midst of all the arguments over evolution and intelligent design, it is amazing how many in society, including the very educated, believe that scientists had already created life in the laboratory. No such thing has ever happened.
All that scientists have done is genetically engineer already existing forms of life in the laboratory, and by doing this scientists have been able to produce new forms of life, but they did not produce these new life forms from non-living matter. Even if scientists ever do produce life from non-living matter it will only be through intelligent design or planning so it still wouldn't help support any theory of life originating by chance or evolution.
Even in the case involving synthetic (artificial) life, scientists don't actually create or produce life itself from non-living matter. What scientists do in this case is create (by intelligent design) artificial DNA (genetic instructions and code) which is then implanted into an already existing living cell and, thereby, changing that cell into a new form of life. And, again, even if scientists ever do create a whole living cell from scratch (and not just its DNA) it still would not be by chance but by intelligent design. Synthetic life is just another form of genetic engineering. But God was the first genetic engineer. Remember that always!
If the cell had evolved it would have had to be all at once. A partially evolved cell cannot wait millions of years to become complete because it would be highly unstable and quickly disintegrate in the open environment, especially without the protection of a complete and fully functioning cell membrane.
Although it has been shown that the basic building blocks of life, amino acids, can come into existence by chance, it has never been shown that the various amino acids can come together into a sequence by chance to form protein molecules. If the amino acids are not in the proper sequence the protein molecules will not function! Even the simplest cell is composed of millions of protein molecules.
There is no innate chemical tendency for the various amino acids to bond with one another in a sequence. Any one amino acid can just as easily bond with any other. The only reason at all for why the various amino acids bond with one another in a precise sequence in the cells of our bodies is because they're directed to do so by an already existing sequence of molecules found in our genetic code.
In Nature there are what scientists call right-handed and left-handed amino acids. However, life requires that all proteins be left-handed. So, not only do millions of amino acids have to be in the correct sequence, they also all have to be left-handed. If a right-handed amino acid gets mixed in then the protein molecules won't function. There won't be any life!
Similarly, the nucleic acids in DNA and RNA must be in a precise sequence. The sugar molecules that make-up the various nucleic acids in DNA and RNA must be right-handed. If a nucleic acid with a left-handed sugar molecule gets into the mix then nothing will work.
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