backtop


Print 52 comment(s) - last by Myrandex.. on Jun 18 at 3:13 PM


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.



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

RE: Ehhh
By MBlueD on 6/16/2008 7:14:32 AM , Rating: 5
Wow! I thought people who Yahoo went extinct!


RE: Ehhh
By BruceLeet on 6/16/2008 7:15:33 AM , Rating: 2
I use Excite too!

They all link to the same stuff though so I dont know what the big deal is.


RE: Ehhh
By tastyratz on 6/16/2008 8:12:19 AM , Rating: 5
oh boy yahoo them.

Why don't you see if anything comes up on Hotbot or Lycos using your $29.95 Netscape Navigator? On the way check your CompuServe or Mindspring email and post on a 28.8 dial in bbs board with that shiny new external us robotics modem. This is of course all while listening to your Alanis Morriset cassette you found using AOL keywords.


RE: Ehhh
By BruceLeet on 6/16/2008 9:34:40 AM , Rating: 3
So definitive, you speak from experience?


RE: Ehhh
By BruceLeet on 6/16/2008 9:40:24 AM , Rating: 4
How do I findan Alanis Morrisette Cassette on AOL?

Isn't it Ironic, dont you think?


RE: Ehhh
By P4blo on 6/17/2008 9:31:53 AM , Rating: 4
Alanis Mirisette has no idea what the word 'ironic' means.

News flash: Rain on your wedding day, isn't ironic :)


RE: Ehhh
By P4blo on 6/17/2008 9:33:11 AM , Rating: 3
Alanis Morrisette even...


"This is about the Internet.  Everything on the Internet is encrypted. This is not a BlackBerry-only issue. If they can't deal with the Internet, they should shut it off." -- RIM co-CEO Michael Lazaridis

Related Articles
Mars Phoenix Lander Touches Down
May 26, 2008, 12:46 PM













botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki