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191

Clothes require laundry because they have accumulated dirt and other materials from the environment and their wearer. If the astronaut was not wearing those clothes then that material they captured would be released to the environment. In the space station it is a closed environment where such dirt and material would contribute to the accumulated hazards. ...


83

Clothing performs essential duties on the station in addition to modesty. They are an easy way to organize stuff. In addition to pockets, clothing is festooned with velcro strips for attaching tools, pens etc. NASA is working on methods for washing clothes in space. Not surprisingly, they've studied the tradeoffs between including a washing machine in the ...


38

Short answer, No different from Earth in floating. Buoyancy in water or any fluid is based on the weight of water displaced. Floating is based on the weight of the item displacing water. This is ultimately ends up in comparing densities. If the density of the displacing object is greater than the density of the fluid it will weigh more and sink, if it's ...


27

A haircut is done with an electric trimmer which has a vacuum hose attached. Wet shaving avoids this by trapping the cuttings in shaving foam, but some astronauts use electric razors, again with a vacuum hose. Here's a video of someone using an electric trimmer: Shaving in space


25

In addition to capture of contaminants, such as dead skin, hair, sweat, etc, and abrasion/cut protection, clothing forms a basic thermal layer that allows the human body to better regulate its internal temperature and perceived comfort level. Every human has variations in temperature, and even in a perfectly controlled environment once you place two humans ...


16

A picture might be worth a thousand words. Just imagine this situation without clothes:


8

The Space Station's Environmental Control and Life Support System eliminates much of the dust and other particulates from the breathing atmosphere via HEPA filters. It also removes water vapor, volatiles such as ammonia, and of course carbon dioxide. That still leaves dust and hairs that collect onto surfaces. Every Saturday, every cosmonaut and astronaut ...


3

Here is a schematic of the shower system. A description from here. This is an enclosure which uses continuous airflow as a gravity substitute to move the water over the crewman. A 6-pound capacity water bottle is filled from the waste management compartment water heater, pressurized with nitrogen, and attached to the grid ceiling at the shower ...


1

I think the most important reason is that clothes perform a very important social function. Most of our workplaces are climate controlled and yet we still wear clothes indoors, putting considerable effort into laundering them and maintaining a wardrobe. Very few of the astronauts are nudists in their personal interests/beliefs and they would not be ...


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