Blogs/Robert Walker/Will First Mars Astronauts Stay In Orbit - Tele-operating Sterile Rovers - To Protect Earth And Mars From Colliding Biospheres: Difference between revisions

Human bodies are wonderful microbe incubators, with [http://journals.plos.org/plosbiology/article/figure?id=10.1371/journal.pbio.1002533.t001 ten to a hundred billion foreign microbes on our skin], and it takes only a month [https://www.ncbi.nlm.nih.gov/books/NBK26865/ from when a cell is born in the basal layer to when it is shed,] carrying any foreign microbes away with it. That’s right, the entire surface of our skin is slowly shed, flake by flake, around once a month. Every single second we emit larger biological particles by the tens of thousands, and tiny sub micron ones by the hundreds of thousands (see [https://www.researchgate.net/profile/Bin_Zhao/publication/273451233_Measuring_short-term_emission_rate_of_particles_in_the_personal_cloud_with_different_clothes_and_activity_intensities_in_a_sealed_chamber/links/550243d90cf231de076de914/Measuring-short-term-emission-rate-of-particles-in-the-personal-cloud-with-different-clothes-and-activity-intensities-in-a-sealed-chamber.pdf figure 7 of this paper]). These constantly carry our tiny passengers away into the air around us in our [https://www.smithsonianmag.com/science-nature/you-produce-microbial-cloud-can-act-invisible-fingerprint-180956698/ personal microbial clouds].

 

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