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EXPOSE
EXPOSE is a multi-user facility mounted outside the International Space Station dedicated to astrobiology. EXPOSE was developed by the European Space Agency (ESA) for long-term spaceflights and was designed to allow exposure of chemical and biological samples to outer space while recording data during exposure.〔(【引用サイトリンク】 EXPOSE - home page )〕
The results will contribute to our understanding of photobiological processes in simulated radiation climates of planets (e.g. early Earth, early and present Mars, and the role of the ozone layer in protecting the biosphere from harmful UV-B radiation), as well as studies of the probabilities and limitations for life to be distributed beyond its planet of origin.〔(The ROSE experiments on the EXPOSE facility of the ISS ). July 2001.〕 EXPOSE data support long-term ''in situ'' studies of microbes in artificial meteorites, as well as of microbial communities from special ecological niches. Some EXPOSE experiments investigated to what extent particular terrestrial organisms are able to cope with extraterrestrial environmental conditions. Others tested how organic molecules react when subjected for a prolonged period of time to unfiltered solar light.
==Objectives==
EXPOSE has several objectives, specific to each experiments, but all linked to the astrobiology domain. Their collective objective is to better understand the nature and evolution of organic matter present in extraterrestrial environments and their potential implications in astrobiology. These experiments mostly study molecules of cometary interest in order to understand the results of the Rosetta
mission, the chemistry of Titan (Cassini–Huygens mission), or the organic chemistry of the Martian environment (Mars Science Laboratory and ExoMars project).〔(Photochemical studies in low Earth orbit for organic compounds related to small bodies, Titan and Mars. Current and future facilities ). ''Bulletin de la Société Royale des Sciences de Liège'', H. Cottin, K. Saiagh, D. Nguyen, T. Berger, et al. Vol. 84, 2014, p. 60-73.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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