Exobiology (theoretical), Complexity in
نویسنده
چکیده
Several aspects of mathematical astrobiology are discussed. It is argued that around the time of the origin of life the handedness of biomolecules must have established itself through an instability. Possible pathways of producing a certain handedness include mechanisms involving either autocatalysis or, alternatively, epimerization as governing effects. Concepts for establishing hereditary information are discussed in terms of the theory of hypercycles. Instabilities toward parasites and possible remedies by invoking spatial extent are reviewed. Finally, some effects of early life are discussed that contributed to modifying and regulating atmosphere and climate of the Earth, and that could have contributed to the highly oxidized state of its crust.
منابع مشابه
The Diversity of Meteoritic Amino Acids: Variations in Abundance and Enantiomeric Composition and Implications for Exobiology
Implications for Exobiology. J. E. Elsila, A. S. Burton, J. C. Aponte, D. G. Blackmond, J. P. Dworkin, and D. P. Glavin, NASA Goddard Space Flight Center, Greenbelt, MD 20771, Astromaterials Research and Exploration Science Division, NASA Johnson Space Center, Mail Code XI3, Houston, TX 77058, Catholic University of America, Washington, DC 20064, Department of Chemistry, The Scripps Research In...
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