<ul><li>Keeping the International Space Station clean is a top priority for NASA, with measures such as air filters, vacuuming, and weekly wipe-downs in place.</li><li>A recent study suggests that the ISS may be too clean, leading to health problems for astronauts due to the lack of microbial diversity.</li><li>Samples collected from various surfaces on the ISS showed significantly less microbial diversity compared to typical buildings on Earth, with the majority of microbes originating from humans and building materials.</li><li>Researchers emphasize the importance of microbial diversity in maintaining health, especially in confined spaces like space stations, suggesting the need to introduce 'good germs' through methods like having animals or fermented foods aboard.</li></ul>

Is the International Space Station too clean?

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