The ROSE experiments on the EXPOSE facility of the ISS

Details The ROSE experiments on the EXPOSE facility of the ISS The ROSE experiments on the EXPOSE facility of the ISS

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.496..383p&link_type=abstract

In: Exo-/astro-biology. Proceedings of the First European Workshop, 21 - 23 May 2001, ESRIN, Frascati, Italy. Eds.: P. Ehrenfreu

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International Space Station, Biological Experiments

Scientific paper

EXPOSE is a multi-user facility to be mounted outside of the International Space Station (ISS). The tray-like structure will accomodate among others 6 biological PI-experiments or experiment systems of the ROSE (Responses of Organisms to the Space Environment) consortium. EXPOSE will support long-term in situ studies of microbes in artificial meteorites, as well as of microbial communities from special ecological niches, such as endolithic and evaporitic ecosystems. Each compartment is either vented, i.e. open to space vacuum, or sealed and then provided with a defined gas environment. The experiment pockets will be covered by an optical filter system to control intensity and spectral range of solar UV irradiation. To achieve maximum insolation, EXPOSE is mounted on a coarse pointing device. Control of sun exposure will be achieved by use of shutters. EXPOSE has been selected for the Early Utilisation Period of the ISS and will stay in space for 1.5 years. 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.

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