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THE INTERNATIONAL SPACE STATION IS SUPER GERMY Thousands of species have colonized the International Space Station — and only one of them is Homo sapiens. According to a new study in the journal PeerJ, the interior surfaces of the 17-year-old, 250-mile-high, airtight space station harbor at least 1,000 and perhaps more than 4,000 microbe species — a finding that is actually “reassuring,” according to co-author David Coil. “Diversity is generally associated with a healthy ecosystem,” said the University of California at Davis microbiologist. A varied population of microscopic inhabitants is probably a signature of a healthy spacecraft, he added. And as humanity considers even longer ventures in space — such as an 18-month voyage to Mars — scientists must understand who these microbes are.    More

(Source: Washington Post - Dec 6)

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