JWST Finds a Clear, Unambiguous Signal for Carbon Dioxide in an Exoplanet's Atmosphere

An early - and exciting — science result from the James Webb Space Telescope (JWST) was announced today: the first unambiguous detection of carbon dioxide in the atmosphere of an exoplanet. This is the first detailed evidence for carbon dioxide ever detected in a planet outside our Solar System. The planet is named WASP-39b and …