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Life detection instrument passes key test on road to Mars

egrated analyzer.

This year, Skelley, Mathies and other team members carried the complete analyzers in three large cases to Chile by plane - in itself a test of the ruggedness of the equipment - and trucked them to the barren Yunguy field station, essentially a ramshackle building at a deserted crossroads. With a noisy Honda generator providing power, they set up their experiments and, with six other colleagues, tested the integrated subcritical water extractor together with the MOA on samples from popular test sites such as the "Rock Garden" and the "Soil Pit."

One thing they learned is that with low environmental levels of organic compounds, as is likely to be the case on Mars, the microfluidic channels in the capillary disks don't get clogged as readily as they do when used to test samples in Berkeley with its high bioorganic levels. That means they'll need fewer channels on the instrument that travels to Mars, and the scanner used to read out the data needn't be as elaborate. This translates into a cheaper and easier way to build instruments, but more importantly, an instrument that is smaller and uses less power.

With the success of this crucial field test, Skelley and Mathies are eager to get to work on a prototype of their instrument that would fit in the allowed space within the ExoMars spacecraft.

"I'm much more optimistic that we could detect life on Mars, if it's there," Mathies said.


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Source:University of California - Berkeley


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