Planetary evolution

Illustrative photo of WASP-107b. The planet's low density and intense radiation from its parent star allow helium to escape from the planet and create an asymmetric, extensive, and sparse shell around it. Infrared observations with the James Webb Space Telescope allow this phenomenon to be seen. Credit: University of Geneva/NCCR PlanetS/Thibaut Roger

James Webb Space Telescope reveals 'super-bloated' planet losing its helium atmosphere

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An international team has discovered vast helium clouds migrating away from the exoplanet WASP-107b.
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