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In 2001, NASA engineer Michael Ewert developed and patented a unique solar-powered vapor-compression refrigeration system that operates without batteries or external power of any kind. The system, which is powered by a photovoltaic panel and custom-designed electronic controls, could be used not only for long-duration space missions but also to build more environmentally friendly refrigeration systems here on Earth. Currently, Ewert is the Deputy Project Manager for NASA’s Exploration Life Support Project, which is developing new technologies needed to sustain human life on long-duration space exploration missions.

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