Failed Star Shakes Up a Phosphine Cocktail ⚡ экспресс
Using the James Webb Space Telescope, astronomers have for the first time reliably measured the amount of phosphine (PH₃) in the atmosphere of the brown dwarf Wolf 1130C. This gas had been predicted by models, but observations had only given tiny upper limits. It turns out that about 100 phosphine molecules are present per billion particles — tens of times more than reported for other similar objects, and exactly matching non-equilibrium chemical models that describe Jupiter and Saturn. So this distant 'failed' world turns out to resemble our own gas giants. Could it be that many exoplanets hide richer chemistry than we thought?
Brown dwarfs — 'failed stars' that couldn't ignite their nuclear furnace. More massive than planets but lighter than stars, they resemble giant atmospheric mixers: their interiors are hot, their upper layers relatively cool, and powerful currents shake this mixture. Using спектрального анализа (breaking light into colors) on телескопе Джеймса Уэбба, scientists detected phosphine in Wolf 1130C. This gas, known from Jupiter, turned out to be ten times more concentrated here than previously seen.
Curiously, on Earth this gas smells like decay, while the cosmic 'cocktail' mixes odorlessly. Now astronomers can use such chemical markers to more clearly distinguish экзопланеты-гиганты from brown dwarfs.
🎯 On Earth, phosphine is a companion of rotting swamps, while in space it's born in the depths and carried up by storms.