The discovery of a possible extrasolar planet that has the same mass as Earth and orbits α Centauri B, a member of the closest star system to the Sun, is both a technical achievement and cause for excitement. See Article p.207
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*This article and the paper under discussion1 were published online on 17 October 2012.
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Hatzes, A. Meet our closest neighbour. Nature 491, 200–201 (2012). https://doi.org/10.1038/nature11636