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Sulu
Fri, Oct 13, 2017, 6:14pm (UTC -5) | 🔗
Re: DSC S1: The Butcher's Knife Cares Not for the Lamb's Cry

Jason - Actually, spores do survive in space.

The following is an abstract from a 1994 research article published in Advances in Space Research:

"On board of the NASA Long Duration Exposure Facility (LDEF), spores of Bacillus subtilis in monolayers (106/sample) or multilayers (108/sample) were exposed to the space environment for nearly six years and their survival was analyzed after retrieval. The response to space parameters, such as vacuum (10−6 Pa), solar electromagnetic radiation up to the highly energetic vacuum-ultraviolet range (109 J/m2) and/or cosmic radiation (4.8 Gy), was studied and compared to the results of a simultaneously running ground control experiment. If shielded against solar ultraviolet (UV)-radiation, up to 80 % of spores in multilayers survive in space. Solar UV-radiation, being the most deleterious parameter of space, reduces survival by 4 orders of magnitude or more. However, up to 104 viable spores were still recovered, even in completely unprotected samples. Substances, such as glucose or buffer salts serve as chemical protectants. With this 6 year study in space, experimental data are provided to the discussion on the likelihood of “Panspermia”."
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