Self-sustaining

Self-sustaining refers to a system or process that is capable of maintaining itself without external assistance or input. In the context of space and astronautical engineering, self-sustaining systems are critical for long-duration space missions, such as those to Mars or beyond. These systems must be able to provide food, water, oxygen, and other necessities for the crew without relying on resupply from Earth. Self-sustaining systems may include closed-loop life support systems, regenerative habitats, and in-situ resource utilization technologies that allow for the extraction and use of resources found on other planets or moons. Achieving self-sustaining capabilities in space is a major goal of space exploration and requires significant technological advancements and innovation.
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