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    Essence of life and multiformity of its realization: expected signatures of life [Text] / S. I. Bartsev ; ed. G Horneck [et al.] // SPACE LIFE SCIENCES: SEARCH FOR SIGNATURES OF LIFE, AND SPACE FLIGHT ENVIRONMENTAL EFFECTS ON THE NERVOUS SYSTEM. Ser. ADVANCES IN SPACE RESEARCH-SERIES : PERGAMON-ELSEVIER SCIENCE LTD, 2004. - Vol. 33: 2nd World Space Congress/34th COSPAR Scientific Assembly (OCT 10-19, 2002, HOUSTON, TX), Is. 8. - P. 1313-1317, DOI 10.1016/j.asr.2003.08.032. - Cited References: 23 . - ISBN 0273-1177
РУБ Engineering, Aerospace + Astronomy & Astrophysics + Biophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Рубрики:
COMPLEX NETWORKS
   EMERGENCE

   EVOLUTION

Кл.слова (ненормированные):
astrobiology -- signatures of life -- essence of life -- multiformity of life
Аннотация: The question on the essence of life as phenomenon is the key one for astrobiology, since the answer to this question determines "breadth of our outlook". Taking Earth's version of life as the pattern extremely under-estimates our estimation of the probability of life origin and respectively expected probability of extraterrestrial life discovery. In the paper the hypothetical key attribute of life in general is selected on the base of comparative analyses and deductive inference. Simulation conducted on the base of neural network model shows that the same function could be realized by means of great variety of structures, which originated in the course of an evolutionary process. So multiplicity of evolutionary outcomes essentially increases the probability of final result - realization of an integrated function providing fitness to environment. Life as the integrated function can be realized via great variety of development ways and structures. A logical consequence of definitions for life as phenomenon is suggested. Final one is "Life is specific organization of informational and energetic processes coupling, enabling choice-making, and displayed as anomalies of different kinds". Anomalies of visible form, mechanical movement, chemical composition and noticeable response are considered. Presented in the paper sweeping generalization is not rigorously proven, however it can play heuristic role in increasing the level of specificity of searching for extraterrestrial life. (C) 2004 COSPAR. Published by Elsevier Ltd. All rights reserved.

WOS
Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bartsev, S.I.; Horneck, G \ed.\; LevasseurRegourd, AC \ed.\; Rabin, BM \ed.\; Rabin, \ed.\

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