Navigation Links
Relic of life in that Martian meteorite? A fresh look

Since the mid-1990s a great debate has raged over whether organic compounds and tiny globules of carbonate minerals imbedded in the Martian meteorite Allan Hills 84001 were processed by living creatures from the Red Planet.

The materials have been under intense scrutiny ever since. Scientists at the Carnegie Institution's Geophysical Laboratory, with colleagues,1 have taken a fresh look at how material associated with carbonate globules was created using sophisticated instrumentation and they compared the results to analogous globules from a volcanic complex on Svalbard, an island north of Norway. It does not appear that living organisms were at work. The research is presented at NASA's Astrobiology Science Conference (AbSciCon) 2006 at the Ronald Reagan Building in Washington, D.C. March 26-30. See http://abscicon2006.arc.nasa.gov/ for details.

To some, the tiny carbonate globules from the meteorite seem to resemble minerals that arise from microbial activity on Earth. The team focused on whether macromolecular carbon (MMC) in and around the globules was processed organically or not--an unresolved issue. The team had a complete depth profile of the meteorite. Lead author Andrew Steele explained, "By using micro-Raman spectroscopy and a scanning electron microscope we could detect both the structure of the minerals and the forms of carbon present. We did a similar analysis on carbonate globules from Earth in terrain analogous to Mars--the Bockjord Volcanic Complex on Svalbard--for comparison."

The researchers found that the macromolecular carbon is always associated with the mineral magnetite. This association is important because magnetite is known to act as a catalyst in the formation of MMC. Macromolecular carbon present within the carbonate globules in ALH84001 may represent the first evidence of non-biological synthesis of organic molecules on Mars.

"Although we haven't settled
'"/>

Source:Carnegie Institution


Page: 1 2

Related biology news :

1. Dig deeper to find Martian life
2. Aloe vera coating may prolong freshness, safety of fruits and vegetables
3. New research puts a fresh spin on current thinking of speech evolution in humans
4. Chemical in many air fresheners may reduce lung function
5. Many cleaners, air fresheners may pose health risks when used indoors
6. Ghost protein leaves fresh tracks in the cell
7. Pharmaceutical compounds found in nations fresh water
8. LSD treatment for alcoholism gets new look
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Relic life that Martian meteorite fresh look

(Date:12/19/2014)... 2014 Research and Markets ( ... "iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 ... their offering. http://photos.prnewswire.com/prnh/20130307/600769 ... in July 2012, Apple introduced the fingerprint reading ... the only device of Apple incorporating such a ...
(Date:12/19/2014)... MOUNTAIN VIEW, Calif. , Dec. 18, 2014 /PRNewswire/ ... the publication of a study that pinpoints fine-scale differences ... the United States . Since immigrants ... the United States has served as ... study illuminates how American history and the ongoing mixing ...
(Date:12/17/2014)... , Dec. 15, 2014 Research and Markets ... addition of the "Samsung Galaxy S5 - ... report to their offering. ... totally different sensing technology than the iPhone 5S, ... sensor in its product. The Galaxy ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... Troy, N.Y. Scientists have long known that the human ... responds to daily patterns of light and darkness. Now a ... daily light intake and activity, which could allow them to ... clock to the 24-hour solar day and relieve psychosocial stress. ...
... More than a third of college athletes assessed for ... in those athletes who had no previous history of ... published in the September issue of the journal Medicine ... of a high prevalence of exercise-induced asthma among Olympic ...
... Strengthen Position in Enterprise Security Solutions, Market by Combining Rich ... ... Distribution Channels, KIRKLAND, Wash., and AUSTIN, Texas, Sept. 4 ... designed to verify identity, secure access and increase,productivity, and IdentiPHI, ...
Cached Biology News:Researchers developing device to predict proper light exposure for human health 2Researchers developing device to predict proper light exposure for human health 3Study finds a high rate of asthma in college athletes 2Saflink and IdentiPHI Announce Merger Agreement 2Saflink and IdentiPHI Announce Merger Agreement 3Saflink and IdentiPHI Announce Merger Agreement 4Saflink and IdentiPHI Announce Merger Agreement 5
(Date:12/19/2014)... 18, 2014 LayerBio is an MIT ... wound care. The National Eye Institute (NEI) at the ... Phase I SBIR grant to develop a drug-eluting intraocular ... most common cause of vision loss in people over ... According to Dr. Ken Mandell, LayerBio’s Founder and CEO, ...
(Date:12/19/2014)... CAMBRIDGE, MA (PRWEB) December 18, 2014 ... adults in the United States suffer from one or ... arthritis, asthma, or cancer. Medication can address some of ... to daily activities that many sufferers face. While implanted ... surgery and stimulate the whole nerve, which can induce ...
(Date:12/19/2014)... contrast to traditional LED lights where the spectrum is ... LED technology to incorporate their spectra in a single ... in low proximity installations. The Valoya L-series offers high ... is up to four times longer than commonly used ... clearly higher when compared to traditional fluorescent or LED ...
(Date:12/19/2014)... (PRWEB) December 18, 2014 With only ... time special on Sartorius Biohit products . The ... mLINE pipettes, Picus Electronic Pipette Trade-in Program, and free ... and Safety officers around the world. They are ideal ... Other features include:, ,     Full volume range ...
Breaking Biology Technology:LayerBio Awarded NIH Grant to Develop a Drug Delivery Device for Cataract Surgery 2Draper Wins GSK Funding for Smaller, Smarter Implantable Devices 2Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2
... Introduction , ... analytical evaluation of tooth decay is required in any study of the ... of which dental products are most effective in slowing or arresting the ... introduce interference that would mask fluorescence indicators. Thus, a SPEX ...
... Introduction , ... concerned with a new generation of graphic displays for communications and high-definition television ... displays, the critical characteristics are the lifetimes and wavelengths of their emissions. ... Experiment and Results , Because the lifetimes ...
... opaque, or solid samples such as blood, ... or phosphors, front-face fluorescence detection offers significant ... Highly concentrated and opaque liquids typically have ... the beam. When measuring fluorescence at 90, ...
Cached Biology Technology:Characterization of tooth decay 2
... a hairpin primer labeled with a ... non-fluorescent quencher) and a 3 single-stranded ... identical to the UniPrimer provided in ... and is provided at a concentration ...
...
Mouse monoclonal antibody raised against a partial recombinant EBI3. NCBI Entrez Gene ID = EBI3...
... The JASCO Model AS-2055 and AS-2057 are ... productivity and,the highest possible level of precision. ... 384 well positions (microplate) for,laboratory automation and ... for 84 micro-vials or the standard rack ...
Biology Products: