News Astronomy

The James Webb telescope spotted CO2 in an exoplanet’s atmosphere

It’s the first definitive detection of the greenhouse gas at a planet outside the solar system

blurry illustration of the exoplanet Wasp-39 b with its star in the background

The James Webb Space Telescope found signs of carbon dioxide in the atmosphere of the gas giant exoplanet WASP-39 b (illustrated, with its star).

NASA, ESA, CSA and J. Olmsted/STScI

By Lisa Grossman

- More than 2 years ago

The James Webb Space Telescope has gotten the first sniff of carbon dioxide in the atmosphere of a planet in another solar system.