Mathematics – Logic
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006eostr..87..433a&link_type=abstract
Eos, Transactions American Geophysical Union, Volume 87, Issue 41, p. 433-439
Mathematics
Logic
3
Planetary Sciences: Solar System Objects: Mars, Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions (0426, 1610), Atmospheric Composition And Structure: Geochemical Cycles (1030)
Scientific paper
Mars long has been considered a cold, dead planet. However, recent reports of methane in the Martian atmosphere suggest that methane currently is being produced, since its calculated atmospheric lifetime of 400 years or less requires a constant resupply. Possible subsurface sources for this resupply are geological, or even microbiological, in nature. So the question is: Is Mars alive, biologically or geologically speaking?
Allen Mark
Lyons James R.
Manning Craig E.
Oehler Dorothy Z.
Runnegar Bruce
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