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ASTRONOMY Stellar Astronomy Proxima Centauri

Proxima Centauri, the nearest star to Earth after the Sun, hosts potentially habitable planets despite intense stellar flares

11 Nov 2025

What characteristic of Proxima Centauri most challenges the potential habitability of its planet Proxima Centauri b?

Its status as a flare star causing intense and unpredictable increases in brightness and radiation. Its extremely large size and high luminosity compared to the Sun. Its rapid orbital period around the Alpha Centauri AB pair.