Abstract
When rock and soil samples are returned from Mars in 2008, they will be immediately placed in biological quarantine and tested for signs of life and hazard, a process that could take weeks or months. Selected subsamples, which have been biologically sterilized, could be released sooner for geochemical analysis. If signs of life or hazard are found in the martian samples, it is quite possible that only sterilized material will make it out of quarantine. Geoscientists thus have a significant stake in finding sterilization techniques that have minimal and quantifiable effects on geochemical measurements of these samples.
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