Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Exobiologie Experiment

Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_1754-2

Definition

During the CNES sponsored mission “Perseus,” the experiment “exobiologie” has been flown in 1999 onboard the Russian MIR space station and exposed for 97 days outside the station (April 16–July 9). Samples containing chiral amino acid (leucine and alpha-methyl leucine) and peptides (leucine-diketopiperazine and trileucine thioethylester), mixed or not with montmorillonite or meteoritic powder, were deposited on windows of magnesium fluoride and exposed directly to the solar UV flux. Spores of Bacillus subtilis mixed with meteoritic powder were also exposed in cooperation with the DLR. As references, duplicates of the samples were placed in the instrument but hidden from the solar light as ground-based experiment was conducted.

Analysis of the material after the flight did not reveal any racemization or polymerization of the amino acids but did provide information regarding photochemical pathways for the degradation of leucine and of the tripeptide. Very thin layers of...

Keywords

Space Station Solar System Inorganic Material Bacillus Subtilis Inorganic Substance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References and Further Reading

  1. Boillot F, Chabin A, Buré C, Venet M, Belsky A, Jacquet R, Bertrand M, Delmas A, Brack A, Barbier B (2002) The PERSEUS exobiology mission on MIR. Behaviour of amino acids and peptides in Earth orbit. Orig Life Evol Biosph 32(4):359–385CrossRefADSGoogle Scholar
  2. Rettberg P, Eschweiler U, Strauch K, Reitz G, Horneck G, Wänke H, Brack A, Barbier B (2002) Survival of microorganisms in space protected by meteorite material: results of the experiment ‘EXOBIOLOGIE’ of the PERSEUS mission. Adv Space Res 30(6):1539–1545CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Vétérinaire/DVM, Astro/ExobiologyCNES/DSP/SMEParisFrance