We've studied the exoplanet WASP-18 b with @NASAHubble, @chandraxray and other telescopes, and now we've looked with @NASAWebb, which measured water at different elevations in the ultra-hot gas giant's atmosphere! http://go.nasa.gov/42aAivX #NASAExoplanets
Scientists used the Webb Telescope identified water vapor in the atmosphere of WASP-18 b, and made a temperature map of the planet as it slipped behind, and reappeared from, its star.
