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Ultraviolet Radiation and Exobiology
2001In comparison to the Earth, extraterrestrial environments possess quite different UV radiation regimes, both in terms of absolute flux and in terms of spectral quality (Horneck et al. 1984; Horneck 1993). For example, the moon has no atmosphere and thus its UV regimen is determined solely by the extraterrestrial spectrum.
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Exobiological habitats: An overview
2008Exobiological habitats, defined here as a long-term (−109 yrs) liquid water environment with available biogenic materials, can be examined from both a stellar and a planetary perspective. From the stellar perspective the solar system's galactic orbit may be fortuitous “straddling” galactic spiral arms, where stellar activity is high.
Laurence R. Doyle, Christopher P. McKay
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Exobiology research on Space Station Freedom
Advances in Space Research, 1995The Gas-Grain Simulation Facility (GGSF) is a multidisciplinary experiment laboratory being developed by NASA at Ames Research Center for delivery to Space Station Freedom in 1998. This facility will employ the low-gravity environment of the Space Station to enable aerosol experiments of much longer duration than is possible in any ground-based ...
T. W. Scattergood +2 more
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The antarctic cryptoendolithic ecosystem: Relevance to exobiology
Origins of Life, 1984Cryptoendolithic microorganisms in the Antarctic desert live inside porous sandstone rocks, protected by a thin rock crust. While the rock surface is abiotic, the microclimate inside the rock is comparatively mild. These organisms may have descended from early, pre-glaciation Antarctic life forms and thus may represent the last outpost of life in a ...
E. I. Friedmann, R. Ocampo-Friedmann
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Evolutionary Biology: Exobiology and Evolutionary Mechanisms
Springer Berlin Heidelberg, 2013P. Pontarotti
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Antarctic microfungi as models for exobiology
Planetary and Space Science, 2004Abstract Microfungi living in different Antarctic environments are generally well adapted to high stress conditions such as low temperatures, wide thermal fluctuations, high UV irradiance, and low water and nutrients availability; for this reason they could be investigated in order to explore limits of microbial life.
Laura Selbmann +3 more
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Preservation of cell structures in permafrost: A model for exobiology
Advances in Space Research, 1995The present report is the first contribution toward a comprehensive fine-structural study of microbial cells from permafrost. Prokaryotes with a variety of cell wall types demonstrate high stability of cell structure after long-term cryopreservation in frozen soils and sediments of the Arctic.
V. S. Soina +3 more
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Exobiology: An Example of Interdisciplinarity at Work
2011Exobiology is an interdisciplinary field that deals with the origins of life on Earth, its evolution and its possible distribution elsewhere in the Universe. This new field appeared around the 1960s, generated by NASA’s Apollo missions. Since then it has experienced a very rapid expansion, far beyond its original purpose, due to new spatial missions ...
Muriel Gargaud, Stéphane Tirard
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3. Exobiology at NASA: Incubator for the Gaia and Serial Endosymbiosis Theories
Earth, Life, and System, 2020J. Strick
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