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Two dust particles from the Murchison meteorite which fell to Earth in Australia in 1969.  (Source: Argonne National Laboratory, Department of Energy)
New evidence suggests that basic life really may have come from the stars.

It has long been thought that the seeds for life came to a primordial Earth from solar system leftovers crashing into the planet. These meteorites, comets, or other unknowns may have contained vital components with which budding life on Earth either assimilated or used as a catalyst to create itself. Now, in a paper to be published in Earth and Planetary Science Letters, European scientists claim they have evidence to prove the theory may be correct.

The group, based at Imperial College London, found some of the base building blocks for life, nucleobases, in dust from the Murchison meteorite which fell to Earth in 1969. Nucleobases, in this case uracil and xanthine, are the components that make up two of the most important parts of any Earth-bound life form, DNA and RNA.

In order to confirm that these molecules weren't from simple contamination, the researchers analyzed the individual atoms of the nucleobases. They found the carbon contained within was a heavier breed that what forms naturally on Earth. The molecules must have come from space.

Professor Mark Sephton, a co-author of the paper states “Because meteorites represent left over materials from the formation of the solar system, the key components for life -- including nucleobases -- could be widespread in the cosmos. 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.”

While giving insights on how higher life may have formed on Earth, the finding may also bolster the theory that life may have once existed on a warmer, wetter Mars or a cooler, clearer Venus. NASA hopes to find evidence for such theories by analyzing the ice contained in the soil of the red wasteland that the Mars Phoenix Lander touched down on.



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RE: Ehhh
By Sunrise089 on 6/16/2008 11:21:47 AM , Rating: 3
For hard science/technical date I challenge you to find a single important article with factual information that is incorrect and not a result of quickly-corrected vandalism.

For analysis I will look elsewhere, but for strait facts or information Wikipedia couldn't be less "ruined."


RE: Ehhh
By Flunk on 6/16/08, Rating: 0
RE: Ehhh
By Adonlude on 6/16/2008 4:35:41 PM , Rating: 3
Holy crap people, drifting a bit! Asteriods, universe, life on earth, get back in the game here!


RE: Ehhh
By Ringold on 6/16/2008 7:29:53 PM , Rating: 2
Newspapers have managed to be probably every bit as accurate as your typical Wikipedia article, but does anybody doubt that the New York Times is biased? What about the nightly news? CNN? Fox? They all have the ability to report the same 'hard facts' and spin it the way their bias dictates.

I don't have the ability to speak on other subject matter, but I've been annoyed with their economics related entries for years. They used to have more slanted language and representations, but many entries have become less biased. The trade off is that some have been over simplified in the process or made sufficiently vague as to not be very useful.

They also play the same game as the news channels; like presenting a widely accepted mainstream theory, and citing "criticisms" from crackpots.

Wikipedia is useful as a toy, a quick reference only because no other online source is quite so handy or friendly, but beyond that it is and always will be a slave to the aggregate ideologies of those who oversee it.


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