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A single star has three super-Earths — and two rare super-Mercuries

A colourful view of Mercury on a black background

Mercury (pictured) has a structure unique in the Solar System, but two bodies that orbit the star HD 23472 have a similar structure. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

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Nature 610, 423 (2022)



  1. Barros, S. C. C. et al. Astron. Astrophys. 665, A154 (2022).

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