Webb Detects Hydrogen Sulfide Gas on Three Super-Jupiters

Feb 16, 2026 - 14:15
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Webb Detects Hydrogen Sulfide Gas on Three Super-Jupiters
Artist's rendering of the planetary system HR 8799 at an early stage in its evolution, showing the planet HR 8799c, a disk of gas and dust, and interior planets (Dunlap Institute for Astronomy & Astrophysics / Mediafarm)

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have for the first time identified hydrogen sulfide gas in the atmospheres of three gas-giant exoplanets orbiting HR 8799, a 30-million-year-old star located in the constellation of Pegasus.

The post Webb Detects Hydrogen Sulfide Gas on Three Super-Jupiters appeared first on Sci.News: Breaking Science News.

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