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Posted on 08/01/2010 2:46:04 PM PDT by LibWhacker
Life originated in a nebular cloud, over 10 billion years ago, but may have had multiple origins in multiple locations, including in galaxies older than the Milky Way. Multiple origins could account for the different domains of life: archae, bacteria, eukaryotes.
The first steps toward life may have been achieved when self-replicating nano-particles initially comprised of a mixture of carbon, calcium, oxygen, hydrogen, phosphorus, sugars, and other elements and gasses were combined and radiated, forming a nucleus around which a lipid-like permeable membrane was established, and within which DNA-bases were laddered together with phosphates and sugars; a process which may have taken billions of years.
DNA-based life may be a "cosmic imperative" such that life can only achieve life upon acquiring a DNA genome. Alternatively, the "Universal Genetic Code" may have won out over inferior codes through natural selection. When the first microbe evolved, it immediately began multiplying and spreading throughout the cosmos. Mechanisms of panspermia and the dispersal of life are detailed including: Solar winds, Bolide Impact, Comets, Ejection of living planets prior to supernova which are then captured by a newly forming solar system, Galactic collisions and following the exchange of stars between galaxies.
Bacteria, archae, and viruses, act as intergalactic genetic messengers, acquiring genes from and transferring genes to life forms dwelling on other planets. Viruses serve as gene depositories, storing vast numbers of genes which may be transferred to archae and bacteria depending on cellular needs. The acquisition of these genes from the denizens of other worlds, enables prokaryotes and viruses to immediately adapt to the most extreme environments, such as might be encountered on other planets.
Be it a Big Bang Universe or an Eternal Infinite Universe, once life was established it began to evolve. Archae, bacteria, and viruses may have combined and mixed genes, thereby fashioning the first multi-cellular eukaryote which continued to evolve. Initially, evolution on various Earth-like planets was random and dictated by natural selection. Over time, increasingly complex and intelligent species evolved through natural selection whereas inferior competitors became extinct. However, their genes were copied by archae, bacteria, and viruses. If the first steps toward life in this galaxy began 13.6 billion years ago, then using Earth as an example, intelligent life might have evolved within this galaxy by 9 billion years ago. As life continued to spread throughout the cosmos, and as microbes and viruses were cast from world to world, genes continued to be exchanged via horizontal gene transfer and copies of genes coding for advanced and complex characteristics were acquired from and transferred to eukaryotes and highly evolved intelligent life.
Eventually descendants of these microbes, viruses, and their vast genetic libraries, fell to new Earth. And the innumerable genes stored and maintained in the genomes of these viruses, coupled with prokaryote genes and those transferred to eurkaryotes, made it possible to biologically modify and terraform new Earth, and in so doing, some of these genes, now within the eurkaryote genome, were activated and expressed, replicating various species which had evolved on other worlds. Genes act on genes, and genes act on the environment and the altered environment activates and inhibits gene expression, thereby directly influencing the evolution of species.
On Earth, the progression from simple cell to sentient intelligent being is due to the activation of viral, archae, and bacteria genes acquired from extra-terrestrial life and inserted into the Earthly eukaryote genome. What has been described as a random evolution is in fact the metamorphosis and replication of living creatures which long ago lived on other planets.
Depends on how you define the word "life."
I would not call whatever was floating around in that nebular cloud "life," but rather possible chemical precursors necessary for life.
So far we have no direct evidence of "bugs from space" landing fully formed to colonize and evolve on earth.
We do have lots of physical evidence that life started here in the simplest possible form and slowly, slowly evolved into the more complex.
Jason McManus thinks science doesn’t require evidence.
TIME + carbon + calcium + oxygen + hydrogen + phosphorus + sugars + and other elements and gases = LIFE
If is it that simple why hasn’t someone re-created it a a lab somewhere?
Science can’t create on purpose what they emphatically believe was created by accident. Who has more faith; the evolutionist or the creationist?
Eureka!! Now we know how the first DNA molecule came into existence, quite by fortuitous accident; or possibly a whole series of fortuitous accidents.
If is it that simple why hasn’t someone re-created it a a lab somewhere?
Science can’t create on purpose what they emphatically believe was created by accident. Who has more faith; the evolutionist or the creationist?
You highlighted the exact reason it's not so simple: we haven't invested the time. Evolution has taken billions of years. We've only been researching it for less than a couple hundred years.
stupidest theory i’ve heard in a long time. complex organic molecules can’t last 5 years in the unprotected radiation of space. they sure as heck won’t last 5 billion years to drift here (and i’m ignoring the fact that we’ve never found anything organic drifting around out there. it would be everywhere if this were how stuff got here).
don’t believe radiation destroys stuff? rubber molecules are large organics. leave a piece in the dessert for 5 years and see what’s left. nothing complex.
truth is, origin of life researchers haven’t a clue how life bean.
a whole series of fortuitous accidents... many of them simultaneous.
WHERE DID THE INFORMATION COME FROM TO MAKE LIFE?
It's not just the materials. They can't self-assemble. The assembly information had to come from somewhere. Where?
The Christian, the Jew, and the Muslim say, "God." If a person disagrees, fine, but at least deal with the issue of bioinformation.
Not only is the radiation damage an issue, what about chirality? All amino acids in life are left-handed. What is the mechanism in a nebula for that? There isn’t one. These guys have no answers, and so they have fallen back on panspermia.
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THX THX. Will check it out.
Are they preparing for disclosure? Sounds like the party line of the “ET” critters.
I guess we’ll have to wait to find out. :’)
IF WWIII begins the first half of Nov as many insist is on the schedule, we may not have to wait long.
Sadly.
As a person who believes in a young earth I think the formula is more accurately expressed as:
TIME + carbon + calcium + oxygen + hydrogen + phosphorus + sugars + and other elements and gases <> LIFE
I firmly believe that things evolve in micro ways but the complexity of LIFE requires a large number of interacting systems, symbiotic relationships, balance, timing etc. that could not evolve to the present state in the amount of time that science suggests the universe has existed.
The human body is amazing. It manufactures at least 53 different hormones (http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/H/HormoneTable.html) and there are 12 systems (8 of which are organ systems). Additionally, there are 5 senses and each one is as amazing as the other.
Too much complexity, variation, and beauty for it (LIFE) to have been created by accident.
As a scientist, I also see too much redundancy and just plain inefficiency to be able to believe that living organisms were carefully crafted.
Why would a creator reinvent the wheel for every single organism? And not just the wheel, but the hubcap, bolts, axles, and every other part—it doesn’t make sense. But from an evolutionary standpoint, it makes sense.
A living organism is nothing more than a conglomeration of chemical reactions. Like any other chemical reactions, they occur as a result of external influences.
I do not have to believe in a literal 7-day creation in order to believe in God, or to be a Christian. To me, the lack of evidence of a Genesis-style creation does not challenge my faith, nor do I see why it should challenge anyone’s. The miracle is that life is even possible, not in the specific process by which it came to have the variety it has today.
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