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Proxima Centauri may be an interloper from far away. The stellar system closest to Earth consists of three stars: the closely orbiting pair of Alpha Centauri A and B, and an outlier called Proxima Centauri.

A new analysis finds that Proxima, along with its planet Proxima b, may not have been born alongside its stellar siblings. If so, the planet could have a better chance at harbouring life.

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