Titlebook: Astrobiology; The Quest for the Co Gerda Horneck,Christa Baumstark-Khan Book 2002 Springer-Verlag Berlin Heidelberg 2002 Habitat.astrobiolo

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https://doi.org/10.1007/978-3-658-13817-2 Earth as well as to the other terrestrial planets via asteroids and comets [1-3]. The period of heavy bombardment lasted until approximately 3.8 billion years (Ga) ago. These impactors would on the one hand have been delivering the volatiles as precursors of life, on the other hand, if sufficiently

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https://doi.org/10.1007/978-3-658-25807-8. By analogy with contemporary life, it is generally believed that life on Earth emerged in liquid water from the processing of organic molecules. Schematically, the premises of primitive life can be compared to parts of “chemical robots”. By chance, some parts self-assembled to generate robots capa

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https://doi.org/10.1007/978-3-8348-9023-8 for native or imported organisms has increased. The surface was discovered to be water ice in 1972 [1]. That tidal heating might maintain a sub-surface layer of water in the liquid state was recognized in 1979 [2], stimulating both popular and scientific speculation of the possibility that the sate

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https://doi.org/10.1007/978-3-8348-9023-8t is a common phenomenon in the cosmos. From an astrobiological point of view, the terrestrial permafrost, inhabited by viable cold adapted microorganisms may be considered as a model of extraterrestrial life. The microorganisms found in the Earth’s permafrost provide a range of potential inhabitant

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Alfred Böge,Walter Schlemmer,Wolfgang Böge Martian surface and terrestrial permafrost areas show similar morphological structures, which suggests that their development is based on comparable processes. Soil microbial investigations of adaptation strategies of microorganisms from terrestrial permafrost in combination with environmental, geo

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https://doi.org/10.1007/978-3-8348-9023-8red to differ most significantly from those permitting life on the planet Earth. Questions about whether or not extra-terrestrial life forms may indeed have been generated during the past 4 billion year old evolution of the solar system, and, if answered positively, whether these forms still exist o

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https://doi.org/10.1007/978-3-8348-9023-8 by prokaryotic microorganisms. Global salt deposits show that evaporation of marine salt water and the development of hypersaline habitats is an ongoing process for millions of years and providing ample time for the evolution of specialized halophilic Bacteria and Archaea. Halophiles, which require

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https://doi.org/10.1007/978-3-8348-9023-8by Johann Wilhelm Ritter, a German electro chemist, in l80l. We now understand that ultraviolet radiation, although representing <2% of the total number of photons that reach the surface of present-day Earth, has had an important role in the evolution of life on Earth. This is because it has a high