Most data for extrasolar rocky planets comes from observations of objects significantly larger than the Earth. The newly discovered SPECULOOS-3 b is a good target for efforts to characterize exoplanets closer in size to the solar system terrestrial planets.
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Bean, J.L., Brady, M. Earth-sized planet spotted around a nearby small star. Nat Astron 8, 805â806 (2024). https://doi.org/10.1038/s41550-024-02317-5
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DOI: https://doi.org/10.1038/s41550-024-02317-5