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Did Life Come from Another World?(Long Read)
Scientific American ^ | October 24, 2005 | By David Warmflash and Benjamin Weiss

Posted on 11/04/2005 11:15:37 PM PST by tbird5

Most scientists have long assumed that life on Earth is a homegrown phenomenon. According to the conventional hypothesis, the earliest living cells emerged as a result of chemical evolution on our planet billions of years ago in a process called abiogenesis. The alternative possibility--that living cells or their precursors arrived from space--strikes many people as science fiction. Developments over the past decade, however, have given new credibility to the idea that Earth's biosphere could have arisen from an extraterrestrial seed.

Planetary scientists have learned that early in its history our solar system could have included many worlds with liquid water, the essential ingredient for life as we know it. Recent data from NASA's Mars Exploration Rovers corroborate previous suspicions that water has at least intermittently flowed on the Red Planet in the past. It is not unreasonable to hypothesize that life existed on Mars long ago and perhaps continues there. Life may have also evolved on Europa, Jupiter's fourth-largest moon, which appears to possess liquid water under its icy surface. Saturn's biggest satellite, Titan, is rich in organic compounds; given the moon's frigid temperatures, it would be highly surprising to find living forms there, but they cannot be ruled out. Life may have even gained a toehold on torrid Venus. The Venusian surface is probably too hot and under too much atmospheric pressure to be habitable, but the planet could conceivably support microbial life high in its atmosphere. And, most likely, the surface conditions on Venus were not always so harsh. Venus may have once been similar to early Earth.

(Excerpt) Read more at sciam.com ...


TOPICS: Miscellaneous
KEYWORDS: abiogenesis; biogenesis; earlyearth; originoflife; origins
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To: tbird5
"Because RNA enzymes could have manufactured the first proteins without the need for preexisting protein enzymes to initiate the process, abiogenesis is not the chicken-and-egg problem that it was once thought to be. A prebiotic system of RNAs and proteins could have gradually developed the ability to replicate its molecular parts, crudely at first but then ever more efficiently."

It's amazing how far the scientific community will reach to try to prove that life "just happened" without an "engineer to run the design". Now the poor slobs are passing the buck to some other world, where, presumably, all of the ingredients for the RNA-DNA helix are just sitting there, waiting to inspire themselves to form complex creatures.

We are stuck with an education system larded with "scientists" that insist that our young people must accept as scientific fact that the evolution proves that life started itself, then radically made itself more complex - even though the physical laws - like entropy - would say otherwise.

Hopefully, this next generation of young people will do a better job of questioning the conventions of these "experts".

21 posted on 11/05/2005 3:40:19 AM PST by USMCVet
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To: weegee
We are from L. Ron Hubbard's alien planet.


22 posted on 11/05/2005 4:09:14 AM PST by peyton randolph (Warning! It is illegal to fatwah a camel in all 50 states)
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To: Drammach

Thanks. Good article. I wish I had found this thread earlier. It's already too far gone for my ping list.


23 posted on 11/05/2005 4:32:19 AM PST by PatrickHenry (Reality is a harsh mistress. No rationality, no mercy)
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To: tbird5

How many "may haves" do you have to have to reach "probably"? Most of the hope that life on earth came from elsewhere falls into the invoking of a secondary hypothesis category to push off to some other place and time the absolutely enormous difficulties posed for cells "evolving" chemically from non-living materials. The chances for a single cell evolving into all life we see today are minuscule compared to those of a single cell "evolving" from non-living materials.


24 posted on 11/05/2005 4:42:44 AM PST by aruanan
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To: concerned about politics
Hey. Wait a minute. I thought evolution from primordial ooze was "proven by science" and "an indisputable fact".

One of the funniest things I've ever seen was a high school biology book by, I believe, Ernst Mayr in the early 1970s that said on one page that Spallanzani and Redi proved that the theory of spontaneous generation was incorrect and showed that life only came from life and then later in the book said that life arose in the seas of the early earth by spontaneous generation and actually used those words.
25 posted on 11/05/2005 4:46:00 AM PST by aruanan
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To: aruanan

If the first life emerged from nowhere, what did it have to eat? .... Rocks?


26 posted on 11/05/2005 5:40:50 AM PST by The Duke
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To: The Duke
If the first life emerged from nowhere, what did it have to eat? .... Rocks?

Light or methane. Basically all the food that plants "eat" is inorganic anyway.
27 posted on 11/05/2005 6:13:13 AM PST by aruanan
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To: Eastbound

In the Bible that would be the seed of the fallen ones, as opposed to the Jews, who were the chosen race because they were the creation of Jehovah.


28 posted on 11/05/2005 6:16:17 AM PST by DLfromthedesert (Texas Cowboy...you da man!!)
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To: The Duke

The bacteria in my nickel plating tanks eat hydrogen and nickel ions. BTW, they would be quite comfy in a Martian hot spring with sulfuric acid.


29 posted on 11/05/2005 6:20:39 AM PST by darth
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To: Eastbound

Correct on Zacharia Sitchin!I don't know if he's right but he's right but he has plausible theories as to mankind's origins.


30 posted on 11/05/2005 6:24:06 AM PST by dennisw (You shouldn't let other people get your kicks for you - Bob Dylan)
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To: tbird5
Nah, they came from some other distant universe, according to some folks...

WARNING: To those who believe that they will become gods... with their very own planet to control!

God is a jealous God.

31 posted on 11/05/2005 6:46:39 AM PST by pageonetoo (You'll spot their posts soon enough!)
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To: pageonetoo

Just noting that it is more likely that life from Earth seeded other worlds in the solar system. Like the Martian meteorite, meteorites crashed off the Earth have made it to Mars or Titan or wherever.

There is also a class of bacteria, the smallest ones known, that can withstand 1,000s of times the radiation that any other living organism can withstand. The bacteria survives and slowly repairs its DNA. Scientists say that the radiation level they can withstand would never have existed on Earth so there would be no need to evolve this ability. That ability, however, would come in handy on a rock in deep space.


32 posted on 11/05/2005 6:56:28 AM PST by JustDoItAlways
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To: JustDoItAlways
Just noting that it is more likely that life from Earth seeded other worlds in the solar system.

Sorry. I'm one of those "Holy Rollers"... I believe in a God able to do anything He wants...

I had one instructor illustrate the odds against evolutionary beginnings. He took an old pocketwatch, and placed it into a cloth bag. He then smashed it several times with a hammer, until you could hear the parts jinging. He then shook it, and shook it, after which he made the following statement:

"the opportinity for evolution is just as likely for this watch to come out of the bag whole!"

In my humble studies, I have found nothing to convince me of the origins of man, having come about by accident. OTOH, I don't really need to find another one.

I hope you find the Peace of God...

33 posted on 11/05/2005 7:03:36 AM PST by pageonetoo (You'll spot their posts soon enough!)
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To: tbird5

bump for later read


34 posted on 11/05/2005 7:06:27 AM PST by Dustbunny (Main Stream Media -- Making 'Max Headroom' a reality.)
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To: dennisw

I've been keeping track of him since '76. Had the feeling he was painting himself in a corner and would have to extricate himself at some point. Not sure he did it to everyone's satisfaction, but I don't think he lost many fans. Can't believe the number of groups that have sprung up who have used his research to promote their own followings, giving him minor mention or credit, though grudgingly, I suspect -- or even not at all.


35 posted on 11/05/2005 8:07:31 PM PST by Eastbound
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To: tbird5

"David Warmflash"? Unfortunate name. Sounds like a symptom of pre- pre-menopause.


36 posted on 11/05/2005 8:09:19 PM PST by r9etb
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To: Eastbound

There are Zacharia Sitchin conventions once or twice a year. It was Ft Lauderdale and Chicago last year. He has followers who are not paupers :)

And who will fly to where he wants to have a weekend gathering


37 posted on 11/06/2005 12:04:10 AM PST by dennisw (You shouldn't let other people get your kicks for you - Bob Dylan)
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To: Eastbound

http://www.sitchin.com/


38 posted on 11/06/2005 12:06:25 AM PST by dennisw (You shouldn't let other people get your kicks for you - Bob Dylan)
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To: Neanderthal
They wasted a few. My Baby Jenette "Vasquez" Goldstein! Heart THROB
39 posted on 11/06/2005 12:22:18 AM PST by Lancer_N3502A
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