The International Space Station has been continuously occupied by rotating crews since Expedition 1 docked on November 2, 2000 — over 25 years of unbroken human presence in space as of November 2025, longer than any other sustained off-world human presence in history, with more than 290 astronauts from around the world having lived and worked aboard.
The question, scope, and sources behind this Registry record.
The International Space Station has been continuously occupied by rotating crews since Expedition 1 docked on November 2, 2000 — over 25 years of unbroken human presence in space as of November 2025, longer than any other sustained off-world human presence in history, with more than 290 astronauts from around the world having lived and worked aboard.
The duration of continuous, unbroken human presence aboard the International Space Station since its first crew arrived, updated as of the most recent milestone. This figure increases continuously as long as the ISS remains crewed.
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Current frontiers derived from accepted Claims.
An observed or demonstrated result; no opposing bound is implied.
The frontier is not sacred
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The frontier as it changed over time.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-ISS-CONTINUOUS-OCCUPATION
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Limits Registry. LR-ISS-CONTINUOUS-OCCUPATION. Longest continuous human presence in space. 2026.