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The JWST just scored another first: a detailed molecular and chemical portrait of a distant world’s skies. The telescope’s array of highly sensitive instruments was trained on the atmosphere of a “hot Saturn”—a planet about as massive as Saturn orbiting a star some 700 light-years away—known as WASP-39 b. While JWST and other space telescopes, including Hubble and Spitzer, previously have revealed isolated ingredients of this broiling planet’s atmosphere, the new readings provide a full menu of atoms, molecules and even signs of active chemistry and clouds.
2 years since James Webb Telescope opened up, this is what it's taught us about the universe
What Would Signal Life on Another Planet?, Science
A New Neptune-Size Exoplanet, Center for Astrophysics
Mystery World Baffles Astronomers, Center for Astrophysics
Astrophysical Observatory
James Webb telescope detects light from a small, Earth-like planet — and finds it's missing its atmosphere
James Webb's search for potential life shines light on Earth-like exoplanet with no atmosphere
How The James Webb Space Telescope will See Oxygen in Alien Atmospheres, by The Cosmic Companion, The Cosmic Companion
Ice-Cold Water, Center for Astrophysics
News Releases, Page 9