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The microbial census of ISS surfaces presented here is a component of a larger project (Project MERCCURI) which was undertaken for both scientific reasons as well as for its outreach and education potential. Project MERCCURI (Microbial Ecology Research Combining Citizen and University Researchers on the ISS) is a collaborative effort involved the "microbiology of the Built Environmnet network" (microBEnet), Science Cheerleader, NanoRacks, Space Florida, and Scistarter.com. Other parts of Project MERCCURI include a project on studying the growth of cultured microbes on the ISS and a project examining the diversity of microbes on cells phones and shoes from public participants are diverse events around the United States. He we focus solely on the microbial survey of surfaces onboard the ISS.   The 15 surfaces sampled on the ISS were chosen by the Project MERCCURI team in an effort to make them analogous to 1) the surfaces sampled for the "Wildlife of Our Homes" project, project (homes.yourwildlife.org),  which asked citizen scientists to swab nine surfaces in their homes, and 2) other cell phone and shoe swab  samples that were also  being collected via Project MERCCURI. The motivation for choosing the sites in this way was both to increase public engagement with awareness of the microbiology of  the data, built environment,  as well as to begin to compare the microbial ecology of homes on Earth with the only current human home in space. We also present a comparison of the ISS swab results with data from 13 human body sites sampled via the Human Microbiome Project. This comparison was done to example the potential human contribution to the microbial life on the ISS.