By 2027–2028, closed-loop life support systems will be deployed for real-world application aboard the International Space Station or its successor platforms. These systems are designed to recycle and regenerate life-supporting resources like air and water, reducing the need for resupply missions and improving the sustainability of long-duration space missions.
As of 2025–2026, the prediction is already underway. The ISS has demonstrated major progress in regenerative life support, especially with water recovery reaching about 98%, a key benchmark for future Moon and Mars missions. Oxygen generation and carbon dioxide recycling systems are also active areas of operational testing. However, a fully integrated closed-loop system — including air, water, waste, and eventually food — is still not complete.
Analysis: This prediction is best classified as In Progress rather than fulfilled or missed. The ISS has already proven major parts of closed-loop life support, especially water recovery and partial air regeneration. But the full vision — a highly autonomous habitat that can recycle most essential resources with minimal Earth resupply — still lies ahead.
The next few years are likely to clarify whether these systems become routine operational infrastructure or remain a collection of advanced demonstrations. Either way, the direction is clear: the ISS is no longer just a laboratory in orbit. It is becoming a rehearsal stage for humanity’s first truly self-sustaining habitats beyond Earth.
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