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ASTRONOMY Exoplanets Proxima Centauri b

Proxima Centauri b

Proxima Centauri b orbits the closest star to our Sun within its habitable zone

11 Nov 2025

What is a major challenge to the potential habitability of Proxima Centauri b despite its location in the habitable zone?

Its orbit is too far from Proxima Centauri to receive enough heat for liquid water. Proxima Centauri b is a gas giant, making it unlikely to support life. Intense electromagnetic radiation from its flare star host could strip away its atmosphere.