NASA's Webb Explores Atmospheric Differences on Exoplanet WASP-39 b
Researchers using NASA's James Webb Space Telescope have confirmed atmospheric differences between the perpetual morning and evening sides of the exoplanet WASP-39 b. This gas giant, with a diameter 1.3 times that of Jupiter but a mass similar to Saturn, orbits a star 700 light-years away and is tidally locked, meaning it has a permanent dayside and nightside. Using Webb's Near-Infrared Sp