ALIENS ANYONE??????

The science or study of primitive societies and the nature of man.

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ALIENS ANYONE??????

Postby fossiltrader » Sat Jun 14, 2008 6:41 pm

Take a look maybe there one or two in here lol?

GENETIC material from outer space found in a meteorite in Australia may well have played a key role in the origin of life on earth, according to a study to be published on Sunday.

European and US scientists say they have proved for the first time two bits of genetic coding, called nucleobases, contained in the meteor fragment, are truly extraterrestrial.

Previous studies had suggested the space rocks, which hit earth about 40 years ago, might have been contaminated upon impact.

Both of the molecules identified, uracil and xanthine, "are present in our DNA and RNA," said lead author Zita Martins, a researcher at Imperial College London.

RNA, or ribonucleic acid, is another key part of the genetic coding that makes up our bodies.

These molecules would also have been essential to the still-mysterious alchemy that somehow gave rise, about four billion years ago, to life itself.

"We know that meteorites very similar to the Murchison meteorite, which is the one we analysed, were delivering the building blocks of life to earth 3.8 to 4.5 billion years ago," Martins said.

Competing theories suggest nucleobases were synthesised closer to home, but Martins said the atmospheric conditions of early earth would have rendered that process difficult or impossible.

A team of European and US scientists showed the two types of molecules in the Australian meteorite contained a heavy form of carbon - carbon 13 - which could only have been formed in space.

"We believe early life may have adopted nucleobases from meteoric fragments for use in genetic coding, enabling them to pass on their successful features to subsequent generations," Martins said.

If so, this would have been the start of an evolutionary process leading over billions of years to all the flora and fauna - including human beings - in existence today.

The study, to be published in Earth Planetary Science Letters, also has implications for life on other planets.

"Because meteorites represent leftover materials from the formation of the solar system, the key components of life - including nucleobases - could be widespread in the cosmos," said co-author Mark Sephton, also at Imperial College London.

"As more and more of life's raw materials are discovered in objects from space, the possibility of life springing forth wherever the right chemistry is present becomes more likely," he said.

Uracil is an organic compound found in RNA, where it binds in a genetic base pair with another molecule, adenine.

Xanthine is not directly part of RNA or DNA, but participates in a series of chemical reactions inside the RNA of cells.

The two types of nucleobases and the ratio of light-to-heavy carbon molecules were identified through gas chromatography and mass spectrometry, technologies that were not available during earlier analyses of the now-famous meteorite.

Even so, said Martins, the process was extremely laborious and time-consuming, one reason it had not be carried out up to now by other scientists.
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Phone home ... human life may have been formed partly by genetic material from outer space, scientists claim.

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Interesting story but I don't have the faith required to believe all life accidentally formed on this planet X billion years ago, and the universe itself is just an unintentional accident.
Posted by: Bob of QLD 5:12pm today Chandra Wickramasinghe hypothesized this decades ago...
Posted by: heather of sunshine coast 4:36pm today This theory has been floating around for some time so its great to see some solid evidence like this finally.
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Postby Minimalist » Sat Jun 14, 2008 6:54 pm

:D


I can just hear the gnashing of teeth and beating of breasts in Club HQ now.
Something is wrong here. War, disease, death, destruction, hunger, filth, poverty, torture, crime, corruption, and the Ice Capades. Something is definitely wrong. This is not good work. If this is the best God can do, I am not impressed.

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Postby Digit » Tue Jun 17, 2008 12:16 pm

can just hear the gnashing of teeth and beating of breasts in Club HQ now


Have you wound Arch up about it yet? :lol:
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Postby Minimalist » Tue Jun 17, 2008 12:24 pm

I'm still waiting for him to explain how Zoroastrianism was the work of the "devil" 15 centuries BC!
Something is wrong here. War, disease, death, destruction, hunger, filth, poverty, torture, crime, corruption, and the Ice Capades. Something is definitely wrong. This is not good work. If this is the best God can do, I am not impressed.

-- George Carlin
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Location: Arizona

Postby Rokcet Scientist » Fri Jun 27, 2008 3:01 am

Minimalist wrote:I'm still waiting for him to explain how Zoroastrianism was the work of the "devil" 15 centuries BC!


Creating Zoroastrianism took Lucifer 2,500 years?
Well, I guess that's to be expected when you drop out of high school, isn't it!

8)
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