Development of biological and nonbiological explanations for the Viking label release data

Details Development of biological and nonbiological explanations for the Viking label release data Development of biological and nonbiological explanations for the Viking label release data

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980bios.rept......&link_type=abstract

Final Report, 15 Feb. 1979 - Feb. 1980 Biospherics, Inc., Rockville, MD.

Biology

Exobiology, Hydrogen Peroxide, Inorganic Chemistry, Mars Surface Samples, Viking Mars Program, Chemical Reactions, Concentration (Composition), Iron Oxides, Spaceborne Experiments, Thermodynamic Properties

Scientific paper

The plausibility that hydrogen peroxide, widely distributed within the Mars surface material, was responsible for the evocative response obtained by the Viking Labeled Release (LR) experiment on Mars was investigated. Although a mixture of gamma Fe2O3 and silica sand stimulated the LR nutrient reaction with hydrogen peroxide and reduced the rate of hydrogen decomposition under various storage conditions, the Mars analog soil prepared by the Viking Inorganic Analysis Team to match the Mars analytical data does not cause such effects. Nor is adequate resistance to UV irradiation shown. On the basis of the results and consideration presented while the hydrogen peroxide theory remains the most, if not only, attractive chemical explanation of the LR data, it remains unconvincing on critical points. Until problems concerning the formation and stabilization of hydrogen peroxide on the surface of Mars can be overcome, adhere to the scientific evidence requires serious consideration of the biological theory.

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