Mathematics – Logic
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.4659h&link_type=abstract
Journal of Geophysical Research, vol. 82, Sept. 30, 1977, p. 4659-4662.
Mathematics
Logic
20
Carbon 14, Extraterrestrial Life, Life Detectors, Mars Environment, Organic Compounds, Viking Lander Spacecraft, Assimilation, Carbon Dioxide, Carbon Monoxide, Soils
Scientific paper
A fixation of atmospheric carbon, presumably into organic form, occurs in Martian surface material under conditions approximating the actual Martian ones. The reaction showed the following characteristics. The amount of carbon fixed is small by terrestrial standards; highest yields were observed in the light, but some dark activity was also detected; and heating the surface material to 90 C for nearly 2 hours had no effect on the reaction, but heating to 175 C for 3 hours reduced it by nearly 90%. New data from Mars do not support an earlier suggestion that the reaction is inhibited by traces of water. There is evidence of considerable heterogeneity among different samples, but different aliquots from the same sample are remarkably uniform in their carbon-fixing capacity. In view of its thermostability it is unlikely that the reaction is biological.
Hobby George L.
Horowitz Norman H.
Hubbard Jerry S.
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