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Extrasolar planets

Fluorescent methane spotted

The atmospheric properties of distant worlds are becoming increasingly clear. The latest observations reveal fluorescent emission from methane in the upper atmosphere of a Jupiter-like extrasolar planet.

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Figure 1: Artist's impression of HD 189733b.

ESA/NASA/G. TINETTI/M. KORNMESSER

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Redfield, S. Fluorescent methane spotted. Nature 463, 617–618 (2010). https://doi.org/10.1038/463617a

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