Looking for life in all the right places—with the right tool

phys.org | 1/11/2017 | Staff
duck.ie (Posted by) Level 3


Researchers have invented a range of instruments from giant telescopes to rovers to search for life in outer space, but so far, these efforts have yielded no definitive evidence that it exists beyond Earth. Now scientists have developed a new tool that can look for signs of life with 10,000 times more sensitivity than instruments carried on previous spaceflight missions. Their report appears in the ACS journal Analytical Chemistry.

One path to finding life on other planets—or moons—involves looking for signature patterns of amino acids, which are organic molecules that are critical to life on Earth. But looking for these molecules on Mars or other planetary surfaces has been a major challenge. The Curiosity rover exploring Mars attempted to accomplish this, but the rover's experiments to identify organic chemicals in Martian samples were complicated by reactions with other materials in the samples. So Peter A. Willis, Jessica Creamer and Maria F. Mora set out to address this limitation.

Researchers - Methods - Electrophoresis - Soil - Ice

The researchers created methods based on capillary electrophoresis to process soil or ice samples and detect 17 different amino acids simultaneously. This particular set of amino acids can be found in large quantities in biological and non-living samples, but in certain patterns, could serve as an indicator of life. The researchers validated their approach by analyzing samples from California's Mono Lake, an extremely salty body of water acting as a stand-in for briny...
(Excerpt) Read more at: phys.org
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