Abstract
This article focuses on the development of equipment to keep astronauts clean while on space missions. As a systems manager for flight crew equipment at the NASA Johnson Space Center in Houston, Stephanie Walker remains keenly aware of the limitations of life in space. We can send a human to the moon, but we cannot ensure that astronauts on the International Space Station (ISS) stay fresh for their six-month missions. Future manned flights will demand extended togetherness: a round-trip to Mars should last at least 18 months. Higher-tech hygiene might be possible. NASA astronauts have tried two T-shirts woven with silver thread. The metal inhibits bacterial growth. Last year NASA began testing silverlaced bedsheets, blankets and other items in its Aquarius underwater habitat, off the Florida coast.
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