Webb Detects Biosignature Gas Phosphine in Atmosphere of Ancient Brown Dwarf

Oct 2, 2025 - 12:30
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Webb Detects Biosignature Gas Phosphine in Atmosphere of Ancient Brown Dwarf
Schematic of the Wolf 1130ABC triple system, composed of the red dwarf star Wolf 1130A (left), its close and compact white dwarf companion Wolf 1130B (center), and the distant brown dwarf Wolf 1130C (right); the three components of this system are shown scaled to their relative sizes. Image credit: Adam Burgasser.

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected phosphine (PH3) in the atmosphere of Wolf 1130C, a metal-poor brown dwarf within the triple system Wolf 1130ABC.

The post Webb Detects Biosignature Gas Phosphine in Atmosphere of Ancient Brown Dwarf appeared first on Sci.News: Breaking Science News.

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