Water vapor discovered in exoplanet’s atmosphere

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Astronomers for the first time have detected water vapor in the atmosphere of another planet. Using sunlight passing through the atmosphere of an exoplanet and picked up by the Hubble telescope, the researchers were also able to detect helium and hydrogen on the planet that is in the right temperature zone to have liquid water. We hear more from Michael Line, an extrasolar planetologist in the Arizona State University School of Earth and Space Exploration.

Michael Line, Planetologist, Arizona State University's School of Earth and Space Exploration

Fountain Hills with text reading: Food Festival Saturday, April 11, 2026, Fountain Hills, Arizona
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Join us for the We-Ko-Pa ‘Check, Please! Arizona’ Food Festival

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The cast of Downton Abbey in Character
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Stream ‘Downton Abbey’ with Arizona PBS Passport

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Join us for PBS Books Readers Club!

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