The effect of temperature on the survival of microorganisms in a deep space vacuum

Details The effect of temperature on the survival of microorganisms in a deep space vacuum The effect of temperature on the survival of microorganisms in a deep space vacuum

Dec 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971slsci...3..108h&link_type=abstract

Space Life Sciences, Volume 3, Issue 2, pp.108-117

Physics

6

Scientific paper

A Space Molecular Sink Research Facility (Molsink) was used to evaluate the ability of microorganisms to survive the vacuum of outer space. this facility could be programmed to simulate flight spacecraft vacuum environments at pressures in the 10-10 torr range and thermal gradients (30 to 60°C) closely associated to surface temperatures of inflight spacecraft. Initial populations ofStaphylococcus epidermidis and aMicrococcus sp. were reduced approximately 1 log while exposed to -105 and 34°C, and approximately 2 logs while exposed to 59°C for 14 days in the vacuum environment. Spores ofBacillus subtilis var.niger were less affected by the environment. Initial spore populations were reduced 0.2, 0.3, and 0.8 log during the 14-day vacuum exposure at -124, 34, and 59°C, respectively.

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