Diverse Atmospheres Found on Giant Planets by James Webb Space Telescope.

Using the James Webb Space Telescope, astronomers have discovered that the atmospheric compositions of giant exoplanets do not follow the same trend as those in our solar system. The atmosphere of exoplanet HD149026b, a "hot Jupiter," is super-abundant in the heavier elements carbon and oxygen, far above what scientists would expect for a planet of its mass. These findings provide insight into planet formation and are an important first step toward obtaining similar measurements for a large sample of exoplanets in order to search for statistical trends.