Evidence for microorganisms in stratosphere air samples collected at a height of 41km

Details Evidence for microorganisms in stratosphere air samples collected at a height of 41km Evidence for microorganisms in stratosphere air samples collected at a height of 41km

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4859..164w&link_type=abstract

Instruments, Methods, and Missions for Astrobiology V. Edited by Richard B. Hoover, Alexei Yu. Rozanov, Roland R. Paepe. Proce

Biology

Scientific paper

Samples of air removed from the stratosphere, at an altitude of 41km, were previously found to contain viable, but non-cultureable bacteria (cocci and rods). Here, we describe experiments aimed at growing these organisms, together with any others, present in the samples. Two bacteria (Bacillus simplex and Staphylococcus pasteuri) and a single fungus, Engyodontium albus (limber)de Hoog were isolated from the samples. Contamination can never be ruled out when space-derived samples are studied on earth, however, we are confident that the organisms isolated here originated from the stratosphere.

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