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Webb telescope captures first direct evidence of carbon dioxide on an exoplanet
A system 130 light-years away contains a gas integral to life processes on Earth.
The HR 8799 system is roughly 30 million years old, making it downright infantile in the scales of deep time, as it only began about halfway between the dinosaurs being wiped out and the modern day. Illustration: Melissa Weiss/Center for Astrophysics | Harvard & Smithsonian In 2022, the Webb telescope detected unequivocal evidence of carbon dioxide in the atmosphere of a distant exoplanet called WASP-39b. The multibillion-dollar space observatory is collecting reams of data for astrophysicists to sift through, revealing the sources of the oldest light we can see and teasing out details of planets previously too faint to identify.
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