Results 201 to 210 of about 6,115 (251)
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Extreme environments and exobiology
Giornale botanico italiano, 1993Ecological research on extreme environments can be applied to exobiological problems such as the question of life on Mars. If life forms (fossil or extant) are found on Mars, their study will help to solve fundamental questions about the nature of life on Earth.
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Exobiological Investigations on Russian Spacecrafts
Astrobiology, 2003To investigate the possibility of prebiotic synthesis of organic molecules in open space, conditions involved irradiating nucleosides and inorganic phosphate during five Earth-orbiting Russian space missions that included Salut-7 (13- and 16-month missions), Mir, Bion-11, and Cosmos-2044.
E. A. Kuzicheva, Natalia B. Gontareva
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BioScience, 1973 X-ray imaging techniques and exobiology
Journal de Physique IV (Proceedings), 2003X-ray imaging techniques at the best spatial resolution and using synchrotron facilities are put forth as powerful techniques for the search of small life forms in extraterrestrial rocks under quarantine conditions. Absorption and fluorescence X-ray microtomographies on sub-millimeter silicate assemblages inside a container reveal the mineralogical ...
Laurence Lemelle +8 more
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Exobiological experiments in Earth orbit
Advances in Space Research, 1998Abstract The primary goal of exobiological research is to reach a better understanding of the processes leading to the origin, evolution and distribution of life on Earth or elsewhere in the universe. In this endeavour, scientists from a wide variety of disciplines are involved, such as astronomy, planetary research, organic chemistry, palaeontology ...
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TRENDS AND PROBLEMS IN EXOBIOLOGY
1965Exobiological trend and problems indicating types of organic matter on planet and origin and transfer of organisms in solar ...
G. Mamikunian, M. H. Briggs
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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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