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Non-Equilibrium Thermodynamic Chemistry and the Composition of the Atmosphere of MarsA high priority objective of the Mars Exploration Program is to Determine if life exists today (MEPAG Goal I, Objective A). The measurement of gases of biogenic origin may be an approach to detect the presence of microbial life on the surface or subsurface of Mars. Chemical thermodynamic calculations indicate that on both Earth and Mars, certain gases should exist in extremely low concentrations, if at all. Microbial metabolic activity is an important non-equilibrium chemistry process on Earth, and if microbial life exists on Mars, may be an important nonequilibrium chemistry process on Mars. The non-equilibrium chemistry of the atmosphere of Mars is discussed in this paper.
Document ID
Document Type
Conference Paper
J S Levine
(Langley Research Center Hampton, Virginia, United States)
M E Summers
(George Mason University Fairfax, Virginia, United States)
Date Acquired
August 21, 2013
Publication Date
July 20, 2003
Publication Information
Publication: Sixth International Conference on Mars Proceedings
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
Meeting Information
Sixth International Conference on Mars(Pasadena, CA)
Funding Number(s)
Distribution Limits
Public Use Permitted.

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