Proxima Centauri, a red dwarf in the Alpha Centauri triple-star system, lies approximately 4.2465 light-years from the Sun — the closest known star. It hosts at least one confirmed exoplanet, Proxima Centauri b, discovered in 2016, orbiting within the star's habitable zone.
The question, scope, and sources behind this Registry record.
Proxima Centauri, a red dwarf in the Alpha Centauri triple-star system, lies approximately 4.2465 light-years from the Sun — the closest known star. It hosts at least one confirmed exoplanet, Proxima Centauri b, discovered in 2016, orbiting within the star's habitable zone.
The distance from the Sun to the nearest confirmed star other than the Sun itself.
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Current frontiers derived from accepted Claims.
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The frontier as it changed over time.
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Permanent ID limitsregistry.com/limits/LR-CLOSEST-STAR
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Limits Registry. LR-CLOSEST-STAR. Closest star to the Sun. 2026.