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Extrasolar planets

An Earth-sized duo

The first Earth-sized planets orbiting a Sun-like star outside the Solar System have at last been detected. The discovery paves the way to finding Earth-like worlds. See Letter p.195

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Figure 1: Orbital configuration of Kepler-20.

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Correspondence to Didier Queloz.

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Queloz, D. An Earth-sized duo. Nature 482, 166–167 (2012). https://doi.org/10.1038/482166a

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