Two Earth-Size Worlds in TRAPPIST-1 System Reveal Stark Divide Between Day and Night

New Webb observations of two exoplanets TRAPPIST-1b and TRAPPIST-1c show blistering days and frozen nights, offering the first detailed climate maps of rocky exoplanets and dimming hopes for habitability. This artist’s impression shows an imagined view from the surface one of the three exoplanets orbiting the ultracool dwarf star TRAPPIST-1 38.8 light-years from Earth. These…

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Giant Exoplanet TOI-5205b Has Carbon-Rich, Oxygen-Poor Atmosphere, Webb Observations Show

Using the Near-Infrared Spectrograph (NIRSpec) onboard the NASA/ESA/CSA James Webb Space Telescope, astronomers have characterized the atmosphere of TOI-5205b, an extrasolar gas giant orbiting a small, dim red dwarf star. These observations have revealed an atmosphere unexpectedly poor in heavy elements, raising fresh questions about how such ‘forbidden’ alien worlds take shape and evolve. The…

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