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NIRISS transmission spectrum of exoplanet WASP-39 b

2022-11-22 - A transmission spectrum of the hot Saturn WASP-39 b captured by the Canadian NIRISS instrument on the Webb Telescope reveals the signatures of many different chemicals in its atmosphere, including potassium, water vapor, and carbon monoxide. (Credit: NASA/ESA/CSA/J. Olmsted [STScI])

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