Astrobiology and the Possibility of Life on Earth and Elsewhere. . .
File(s)Cottin et al 2015 Astrobiology SSR.pdf (2.82 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Astrobiology is an interdisciplinary scientific field not only focused on the search of extraterrestrial life, but also on deciphering the key environmental parameters that have enabled the emergence of life on Earth. Understanding these physical and chemical parameters is fundamental knowledge necessary not only for discovering life or signs of life on other planets, but also for understanding our own terrestrial environment. Therefore, astrobiology pushes us to combine different perspectives such as the conditions on the primitive Earth, the physicochemical limits of life, exploration of habitable environments in the Solar System, and the search for signatures of life in exoplanets. Chemists, biologists, geologists, planetologists and astrophysicists are contributing extensively to this interdisciplinary research field. From 2011 to 2014, the European Space Agency (ESA) had the initiative to gather a Topical Team of interdisciplinary scientists focused on astrobiology to review the profound transformations in the field that have occurred since the beginning of the new century. The present paper is an interdisciplinary review of current research in astrobiology, covering the major advances and main outlooks in the field. The following subjects will be reviewed and most recent discoveries will be highlighted: the new understanding of planetary system formation including the specificity of the Earth among the diversity of planets, the origin of water on Earth and its unique combined properties among solvents for the emergence of life, the idea that the Earth could have been habitable during the Hadean Era, the inventory of endogenous and exogenous sources of organic matter and new concepts about how chemistry could evolve towards biological molecules and biological systems. In addition, many new findings show the remarkable potential life has for adaptation and survival in extreme environments. All those results from different fields of science are guiding our perspectives and strategies to look for life in other Solar System objects as well as beyond, in extrasolar worlds.
Date Issued
2015-09-08
Date Acceptance
2015-09-01
Citation
Space Science Reviews, 2015, 209 (1-4), pp.1-42
ISSN
0038-6308
Publisher
Springer
Start Page
1
End Page
42
Journal / Book Title
Space Science Reviews
Volume
209
Issue
1-4
Copyright Statement
© Springer Science+Business Media Dordrecht 2015. The final publication is available at Springer via https://dx.doi.org/10.1007/s11214-015-0196-1
Sponsor
The Royal Society
The Royal Society
Identifier
http://link.springer.com/article/10.1007/s11214-015-0196-1
Grant Number
UF080820
UF130324
Subjects
Astrobiology
Exobiology
Origin of life
Search for extraterrestrial life
Limits of life
Prebiotic chemistry
Water
Publication Status
Published