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“Space rock” reveals life’s origins
Phenomenica ^ | 10/6/08

Posted on 10/07/2008 3:06:26 AM PDT by LibWhacker

Washington, Oct 06: A meteorite, which crashed into Australia 40 years ago, is telling researchers new things about how life may have started on Earth, and how that almost universal protein left-handedness came to be.

For more than 150 years, scientists have known that the most basic building blocks of life - chains of amino acid molecules and the proteins they form - almost always have the unusual characteristic of being overwhelmingly “left-handed.”

The molecules, of course, have no hands, but they are almost all asymmetrical in a way that parallels left-handedness.

This observation, first made in the 1800s by French chemist Louis Pasteur, is taught to introductory organic chemistry students - until recently with the caveat that nobody knew how this came to be.

But research into the question has picked up in recent years, focusing on a 200-pound chunk of rock found 40 years ago in Murchison, Australia.

A meteorite that broke off an asteroid long ago, it brought to Earth a rich collection of carbon-based material from far away in the solar system.

According to a report in Washington Post, while the Murchison meteorite does not have any once-living material, it is telling researchers new things about how life may have started on Earth, and how that almost universal protein left-handedness came to be.

The answer they believe they have found is that 3 billion to 4 billion years ago, before life on Earth began, similar meteorites crashed regularly into the planet - delivering the amino acids that would later be incorporated into all living things.

The meteorites did this by providing building blocks with a slight preponderance of that handedness (known scientifically as chirality) that makes life possible.

“We know that all amino acids start mirror-image the same, but in living things they have this handedness,” said Ronald Breslow, a Columbia University researcher.

“This change doesn’t happen spontaneously, and we’ve never been able to reproduce it in the laboratory under conditions similar to early Earth,” he added.

“The answer to where it comes from looks increasingly like meteorites, from extraterrestrial bodies falling to Earth. It’s a complex story, but we’re beginning to understand it better,” he further added.

Breslow and his colleagues made significant progress recently when they proved that the Murchison amino acids could transfer their left-handedness to otherwise symmetrical amino acids.

They then found that small degrees of chirality could be dramatically amplified in a water solution under conditions similar to the early Earth.

Their conclusion was that even the relatively limited number of additional left-handed amino acids in the meteorites could, under the right conditions, lead to a world where almost all amino acids and proteins end up left-handed.


TOPICS: Astronomy; Science
KEYWORDS: aminoacid; answersingenesis; catastrophism; dna; godsgravesglyphs; icr; lifes; meteorite; origins; panspermia; reveals; rna; xplanets

1 posted on 10/07/2008 3:06:27 AM PDT by LibWhacker
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To: LibWhacker

Bet ya God is surprised....


2 posted on 10/07/2008 3:21:25 AM PDT by GregB (I am a Palin Republican!!!!!)
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To: LibWhacker

The study of this rock has sinister implications!


3 posted on 10/07/2008 4:02:43 AM PDT by Young Werther (Julius Caesar (Quae Cum Ita Sunt. Since these things are so.))
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To: LibWhacker

So I guess it’s inevitable that the world will eventually be ruled by the Left. They certainly seem to be on a roll these days.


4 posted on 10/07/2008 4:27:40 AM PDT by hellbender
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To: LibWhacker

We shouls all be southpaws then.


5 posted on 10/07/2008 4:43:28 AM PDT by traderrob6
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To: LibWhacker

“Space Rock”... I thought this was a thread about Pink Floyd... sorry...


6 posted on 10/07/2008 6:08:12 AM PDT by J40000
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To: GregB
> Bet ya God is surprised....

I don't think -anything- surprises God.

After all, He probably sent that rock to Earth, whether directly or indirectly....

7 posted on 10/07/2008 6:21:17 AM PDT by dayglored (Listen, strange women lying in ponds distributing swords is no basis for a system of government!)
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To: J40000; LibWhacker
> “Space Rock”... I thought this was a thread about Pink Floyd... sorry...

No, man, the Grateful Dead.... oh wow....

8 posted on 10/07/2008 6:24:10 AM PDT by dayglored (Listen, strange women lying in ponds distributing swords is no basis for a system of government!)
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To: dayglored

You got that right...He ought to send some stuff that blows all their thinking out of the water!!!!


9 posted on 10/07/2008 6:53:21 AM PDT by GregB (I am a Palin Republican!!!!!)
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To: LibWhacker

bmflr


10 posted on 10/07/2008 10:43:24 AM PDT by Kevmo (McCain's learning from Palin how to win a national election. Palin's learning from him how to lose 1)
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To: Young Werther
The study of this rock has sinister implications!

lol ... clever.

Of course, this doesn't actually "solve" the mystery at all -- it merely transfers the mystery to the formation of these left-handed amino acids from Earth, to an asteroid.

11 posted on 10/07/2008 10:54:27 AM PDT by r9etb
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To: Young Werther
"The study of this rock has sinister implications!"

I certainly hope they handle this rock with the appropriate level of dexterity.

12 posted on 10/07/2008 10:58:11 AM PDT by who_would_fardels_bear (The cosmos is about the smallest hole a man can stick his head in. - Chesterton)
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To: GregB
> You got that right...He ought to send some stuff that blows all their thinking out of the water!!!!

Heh, He does. On a fairly regular basis.

That's why the proper study of science -- the true scientific method -- is completely compatible with a belief in a Creator. Indeed, can be considered worshipful. Science, done right, is an attempt to understand what God has created, by making up models that we can wrap our limited minds around. That lets us better appreciate and wonder at the glories of the universe.

And every time we think we've got a model that explains everything we observe, we discover yet another thing that makes us reconsider and expand our model to encompass the latest gift from our Creator. (That's why science is always adjusting itself, correcting its views.)

Personally, I think of God as the original Scientific Experimenter. In my view, all of Creation is His "lab", and we are his "experiment".

(Deep voice) "Heh, I wonder what they'll think of -this- one...!"

13 posted on 10/07/2008 4:43:17 PM PDT by dayglored (Listen, strange women lying in ponds distributing swords is no basis for a system of government!)
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To: who_would_fardels_bear; Young Werther
>> "The study of this rock has sinister implications!"

> I certainly hope they handle this rock with the appropriate level of dexterity.

You're absolutely right.

14 posted on 10/07/2008 4:45:25 PM PDT by dayglored (Listen, strange women lying in ponds distributing swords is no basis for a system of government!)
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To: KevinDavis; annie laurie; garbageseeker; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; ...
Panspermia ping.
 
X-Planets
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15 posted on 10/07/2008 6:11:01 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile hasn't been updated since Friday, May 30, 2008)
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To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aristotleman; Avoiding_Sulla; BBell; BenLurkin; ...
Rocks around the clock.
 
Catastrophism
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16 posted on 10/07/2008 6:11:48 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile hasn't been updated since Friday, May 30, 2008)
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To: StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; 2ndDivisionVet; 31R1O; ...

· join list or digest · view topics · view or post blog · bookmark · post a topic ·

 
Gods
Graves
Glyphs
I didn't check for Helen Thomas pics, and don't wanna. And don't none a you smart alecks post me none of them.

To all -- please ping me to other topics which are appropriate for the GGG list.
GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach
 

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17 posted on 10/07/2008 6:12:50 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_______Profile hasn't been updated since Friday, May 30, 2008)
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To: LibWhacker

And the rock evolved into liberals.


18 posted on 10/07/2008 6:15:08 PM PDT by bmwcyle (Vote McWhatshisname and PALIN)
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To: LibWhacker
Washington, Oct 06: A meteorite, ..

. . while the Murchison meteorite does not have any once-living material, . how life may have started on Earth, . . they believe . . meteorites could, under the right conditions, . .

Yup, just another religion based on faith.

19 posted on 10/07/2008 7:26:24 PM PDT by aimhigh
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To: J40000
"“Space Rock”... I thought this was a thread about Pink Floyd... sorry..."

It's early rock.

20 posted on 10/07/2008 8:41:43 PM PDT by blam
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To: LibWhacker
Just for the sake of discussion, let's say there "story" is correct. That still doesn't explain the origin of life. It would simply move the point of origin back one level.

And for the record, I accept the biblical explanation for the origin of life.

21 posted on 10/07/2008 8:48:55 PM PDT by LiteKeeper (Beware the secularization of America; the Islamization of Eurabia)
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To: LibWhacker

imho . . .

laying the groundwork for the hoax yet to come . . .

that ET’s created humans and started life in our regions . . .

panspermia is one term brandied about to include such purported ‘history.’


22 posted on 10/07/2008 10:29:01 PM PDT by Quix (POL LDRS GLOBALIST QUOTES: #76 http://www.freerepublic.com/focus/news/2031425/posts?page=77#77)
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To: SunkenCiv

Yet another reason to enforce our borders.
Alien rocks from outer space bringing in undocumented life precursors!


23 posted on 10/08/2008 2:34:00 AM PDT by Grimmy (equivocation is but the first step along the road to capitulation)
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