Featured Research

from universities, journals, and other organizations

Cold Case: Looking For Life On Mars

Date:
March 23, 2006
Source:
Carnegie Institution
Summary:
Evidence never dies in the popular TV show Cold Case. Nor do some traces of life disappear on Earth, Mars, or elsewhere. An international team of scientists, including researchers from the Carnegie Institution, has developed techniques to detect miniscule amounts of biological remains, dubbed biosignatures, in the frozen Mars-like terrain of Svalbard, a island north of Norway. This technology will be used on future life-search missions to the Red Planet.

Evidence never dies in the popular TV show Cold Case. Nor do some traces of life disappear on Earth, Mars, or elsewhere. An international team of scientists,* including researchers from the Carnegie Institution's Geophysical Laboratory, has developed techniques to detect miniscule amounts of biological remains, dubbed biosignatures, in the frozen Mars-like terrain of Svalbard, a island north of Norway. This technology will be used on future life-search missions to the Red Planet.

"It might seem like we're looking for a needle in a haystack," remarked Carnegie researcher Marilyn Fogel.1 "But it's much better than that. One of our studies showed that we can detect even the most minute amounts of the element nitrogen, which can be evidence of life. Interestingly, rocks might be particularly promising places to find traces left by the tiniest microbes. Svalbard is brittle cold, very dry, and rocky, much like the Martian environment, making it an excellent test bed."

Nitrogen is essential to DNA, RNA, and protein. All life depends on it. The scientists looked at how a certain type, or isotope, of nitrogen was distributed in soils, water, rocks, plants, and in microbes. They found that nitrogen quantities varied depending on how the element interacted with the environment and living organisms. "We found that organisms leave tell-tale nitrogen fingerprints on rocks, " stated Fogel. "The technology is well suited for finding remains of life on the rocky terrain of Mars."

In another study, the group found that they could adapt techniques used in genetic laboratories to the field.2 They found that DNA sampling and the polymerase chain reaction (PCR) method--which makes many copies of a specific segment of DNA for analysis--can detect genetic differences in rock-dwelling communities of blue-green algae (cyanobacteria) and fungi. Further, they identified over 90 different compounds that can be correlated to biosignatures of those life forms. These fingerprints will be part of an enormous library of signatures to which Martian samples can be compared in the search for life.

The work is presented in several talks at NASA's Astrobiology Science Conference (AbSciCon) 2006 at the Ronald Reagan Building in Washington, D.C., March 26-30.

  • 1 Fogel and AMASE team, "Nitrogen cycling in cold analogue environments" March 27th
  • 2 Jennifer Eigenbrode, et al., "Biosignatures of arctic organisms from different rock types" March 27, 2006

Story Source:

The above story is based on materials provided by Carnegie Institution. Note: Materials may be edited for content and length.


Cite This Page:

Carnegie Institution. "Cold Case: Looking For Life On Mars." ScienceDaily. ScienceDaily, 23 March 2006. <www.sciencedaily.com/releases/2006/03/060322135731.htm>.
Carnegie Institution. (2006, March 23). Cold Case: Looking For Life On Mars. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2006/03/060322135731.htm
Carnegie Institution. "Cold Case: Looking For Life On Mars." ScienceDaily. www.sciencedaily.com/releases/2006/03/060322135731.htm (accessed July 30, 2014).

Share This




More Space & Time News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Rocket Launches Into Space With Cargo Ship

Raw: Rocket Launches Into Space With Cargo Ship

AP (July 30, 2014) Arianespace launched a rocket Tuesday from French Guiana carrying a robotic cargo ship to deliver provisions to the International Space Station. (July 30) Video provided by AP
Powered by NewsLook.com
In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) Video provided by AP
Powered by NewsLook.com
Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Newsy (July 27, 2014) The satellite is back under ground control after a tense few days, but with a gecko sex experiment on board, the media just couldn't help themselves. Video provided by Newsy
Powered by NewsLook.com
NASA EDGE: OCO-2 Launch

NASA EDGE: OCO-2 Launch

NASA (July 25, 2014) NASA EDGE webcasts live from Vandenberg AFB for the launch of the Oribiting Carbon Observatory-2 (OCO) launch. Video provided by NASA
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins