An exoplanet as hot as a star challenges our understanding of how planets evolve under extreme conditions. Observations with the CARMENES spectrograph provide clues about the atmospheric properties of this outstanding planet.
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Ehrenreich, D. Excited hydrogen detected in exciting gas giant. Nat Astron 2, 703–704 (2018). https://doi.org/10.1038/s41550-018-0534-9
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DOI: https://doi.org/10.1038/s41550-018-0534-9
