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URANUS

Selective enrichment of volatiles confirmed

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Hydrogen sulfide gas is detected above Uranus’s main cloud deck, confirming the prevalence of H2S ice particles as the main cloud component and a strongly unbalanced nitrogen/sulfur ratio in the planet's deep atmosphere.

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Fig. 1: Microwave spectrum and images of Uranus.

Panel a adapted from ref. 6, Elsevier and panel b courtesy of Mark Hofstadter and Bryan Butler.

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Correspondence to Imke de Pater.

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de Pater, I. Selective enrichment of volatiles confirmed. Nat Astron 2, 364–365 (2018). https://doi.org/10.1038/s41550-018-0457-5

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