Navigation Links
Comet probes reveal evidence of origin of life, scientists claim
Date:8/14/2007

Recent probes inside comets show it is overwhelmingly likely that life began in space, according to a new paper by Cardiff University scientists.

Professor Chandra Wickramasinghe and colleagues at the Universitys Centre for Astrobiology have long argued the case for panspermia - the theory that life began inside comets and then spread to habitable planets across the galaxy. A recent BBC Horizon documentary traced the development of the theory.

Now the team claims that findings from space probes sent to investigate passing comets reveal how the first organisms could have formed.

The 2005 Deep Impact mission to Comet Tempel 1 discovered a mixture of organic and clay particles inside the comet. One theory for the origins of life proposes that clay particles acted as a catalyst, converting simple organic molecules into more complex structures. The 2004 Stardust Mission to Comet Wild 2 found a range of complex hydrocarbon molecules - potential building blocks for life.

The Cardiff team suggests that radioactive elements can keep water in liquid form in comet interiors for millions of years, making them potentially ideal incubators for early life. They also point out that the billions of comets in our solar system and across the galaxy contain far more clay than the early Earth did. The researchers calculate the odds of life starting on Earth rather than inside a comet at one trillion trillion (10 to the power of 24) to one against.

Professor Wickramasinghe said: The findings of the comet missions, which surprised many, strengthen the argument for panspermia. We now have a mechanism for how it could have happened. All the necessary elements - clay, organic molecules and water - are there. The longer time scale and the greater mass of comets make it overwhelmingly more likely that life began in space than on earth.


'/>"/>

Contact: Stephen Rouse
rouses@cardiff.ac.uk
44-292-087-5596
Cardiff University
Source:Eurekalert

Page: 1

Related biology news :

1. NASA probe could reveal comet life, scientists claim
2. Nano-Probes Allow an Inside Look at Cell Nuclei
3. Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin
4. Products containing specific probes for detecting alternative splice forms protected
5. Smart nanoprobes light up disease
6. UC Davis researchers use heated nanoprobes to destroy breast cancer cells in mice
7. York mathematician probes geometric route to combat viruses
8. Elusive HIV shape change revealed; Key clue to how virus infects cells
9. Timing is everything: First step in protein building revealed
10. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
11. Researchers reveal the infectious impact of salmon farms on wild salmon
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/29/2014)... Territories in Canada and have sent smoke drifting down ... NASA,s Aqua satellite collected this natural-color image with ... 26, 2014. Actively burning areas, detected by MODIS,s thermal ... are drifting northward in this image. Smoke is ... has caused power outages in the area and because ...
(Date:7/29/2014)... University of Kent has shown for the first time ... breakthrough that could have a major impact on cancer ... Biosciences uncovered the mechanism whereby the physical properties of ... filaments are ,fine-tuned, to undertake different functions. , ... stable, providing a framework for the cell, others are ...
(Date:7/29/2014)... A ground breaking new book that brings together two ... to raise the profile of insect fossils through stunning ... David Penney and James E Jepson, details the incredible ... world, setting the scene for what these remarkable fossils ... and even the future of our planet. Like the ...
Breaking Biology News(10 mins):Unique images bring fossil insects back to life 2
... 25, 2013) -- Twenty grams of essential amino acids taken twice ... surgeries helped 16 patients, mean age 69, recover faster and with ... The approach -- detailed in a paper now online ahead ... of Clinical Investigation -- could spell relief and speed recovery ...
... of Medicine (BUSM) have discovered a molecule that could help ... as its treatment. Using RNA sequencing, the team looked at ... less abundant in people with lung cancer and inhibits lung ... Proceedings of the National Academy of Sciences , suggest ...
... millions of years ago are recorded at daily rate ... huge X-ray microscope has revealed growth bands in plankton ... temperature. The results could allow scientists to chart ... of years ago. Plankton shells show features like ...
Cached Biology News:Oregon researchers say supplement cuts muscle loss in knee replacements 2Oregon researchers say supplement cuts muscle loss in knee replacements 3Oregon researchers say supplement cuts muscle loss in knee replacements 4BUSM researchers identify molecule that could aid lung cancer detection, treatment 2Reading ancient climate from plankton shells 2
(Date:7/29/2014)... , July 29, 2014  The Society ... new and updated program for the 9 th ... 12, 2014 in Amelia Island , Florida.  ... and investigators remains unchanged, however, the topics and ... and networking opportunity among all stakeholders with a ...
(Date:7/29/2014)... , July 29, 2014 ... Scanners (Whole Slide Imaging), Analytics (Image Analysis Software), Delivery ... - Global Forecasts & Trends to 2018", published by ... restraints in geographies such as North America ... Asia , and the Rest of the World ...
(Date:7/29/2014)... Oregon , July 29, 2014 ... "Global surgical equipment market (types, applications and geography) - ... Research, Report, Opportunities, Segmentation and Forecast, 2013 - 2020", ... to reach $12.1 billion by 2020 registering a CAGR ... to the breakthrough achieved by the electro surgical devices ...
(Date:7/29/2014)... 29, 2014 TransVac Solutions, the trusted ... and transport solutions for hospitals, will be exhibiting at ... (ASHE) Annual Conference & Technical Exhibition Aug. 3-6 in ... technology for making hospitals cleaner, reducing infection risk and ... hospital’s life cycle. Staff will be available at ...
Breaking Biology Technology:TransCelerate, Lilly, Pfizer, and FDA Highlight Collaborative Program at the Site Solutions Summit 2TransCelerate, Lilly, Pfizer, and FDA Highlight Collaborative Program at the Site Solutions Summit 3Digital Pathology Market worth $437 Million by 2018 2Digital Pathology Market worth $437 Million by 2018 3Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 2Global Surgical Equipment Market is expected to reach $12.1 billion by 2020 - Allied Market Research 3TransVac Presents Cost Saving Technology at ASHE Conference for Keeping Hospitals Cleaner 2
... today announced,the appointment of Tim Ravenscroft as chief ... "The board of Lentigen,is delighted that Tim has ... to enter,clinical trials for our first therapies later ... background and global leadership in,healthcare products will serve ...
... EXTON, Pa., Jan. 28 BioTrends Research Group, ... report offering comprehensive insight into the management of,renal ... Kidney Disease,(CKD). The report is based on responses ... in the US, during December 2007., In ...
... Provides a Neuroprotective Effect in Preclinical Model of ... ... /PRNewswire-FirstCall/ - Vasogen Inc.,(NASDAQ: VSGN ; TSX:VAS), a biotechnology company ... target the destructive,inflammatory process associated with the development and progression ...
Cached Biology Technology:Lentigen Appoints Tim Ravenscroft as Chief Executive Officer 2BioTrends Releases Fourth Annual Nephrology TreatmentTrends Publication Highlighting Market Trends for Renal Anemia, Hyperphosphatemia, and Secondary Hyperparathyroidism 2Vasogen's Research Published in European Journal of Neuroscience 2Vasogen's Research Published in European Journal of Neuroscience 3Vasogen's Research Published in European Journal of Neuroscience 4Vasogen's Research Published in European Journal of Neuroscience 5
...
... Custom Synthesis Service provides you ... to knockdown any gene. We ... base pairs with terminal dT ... other lengths of your choice. ...
...
...
Biology Products: