Moon orbiting WASP-49 b sodium cloud

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Phys Org

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Distant planet may host volcanic moon like Jupiter's Io

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A sodium cloud around WASP-49 b was first detected in 2017 , catching the attention of Apurva Oza .

Oza has spent years investigating how exomoons might be detected via their volcanic activity.

The cloud appears to be coming from a source that is producing roughly 220,000 pounds ( 100,000 kilograms ) of sodium per second .

It's possible that astronomers looking at another star system could detect a gas cloud like Io 's.

"If there really is a moon there, it will have a very destructive ending," said Oza. More information: Apurva V. Oza et al , Redshifted Sodium Transient near Exoplanet Transit , The Astrophysical Journal Letters ( 2024 ). DOI: 10.3847/2041-8213 /ad6b29 Journal information: Astrophysical Journal Letters Provided by NASA .

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