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AFAIK, the main problem is static electricity, dust tends to stick to everything with a minimum charge, my personal guess is that if not properly handled the ventilation system could make it worse because dust will generate more static electricity by rubbing the vents. I know my answer is not as complete as others, however I noticed that nobody mentioned ...


The problem is the route the pinxy-wee particles take. When you guarantee that this, that or the other contaminant goes through a filter before hitting the astronaut's eye or nose or mouth… or any system that might mind being invaded by dust, everything might be fine and dandy. How, though, will you make that guarantee?


Dust will damage machinery through more than just conducting electricity or hindering passive cooling. Fans in particular are vulnerable. Dust can slow down fans by adding weight to the blades or caking onto the shaft and increasing friction. Fine particles that get into the fan's casing have a hard time getting out. They grind against the fan's bearings ...


When you have gravity heavy particulates like shavings, crumbs, large dust granules, etc. will fall to the ground where they can be cleaned or form part of the environment. In microgravity everything is suspended no matter the size, so there is a lot more stuff to deal with, including dust. Heavier particles take more energy to move, so they will take longer ...


Getting dust in one's eyes is a mild inconvenience at best. However, what happens if the dust particle lodges itself in a person's eye just when that person needs to do something critical? What happens if a dust particle cannot be easily or safely dislodged and the person has to endure having something in their eye for a prolonged period? The stress caused ...


The current US EVA hammer is just... a hammer. Source: EVA Tool Catalog

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