Researchers find a carbon-rich moon-forming disk around giant exoplanet

The James Webb Space Telescope detected a carbon-rich moon-forming disk around CT Cha b, a super-Jupiter exoplanet located 625 light-years away, revealing high concentrations of small carbon molecules like ethane and acetylene despite the absence of water. This discovery is surprising because the host star's planet-forming disk contains primarily water molecules, suggesting that moon-forming materials can differ significantly from the broader system composition and providing crucial insights into how moons develop around giant exoplanets.