sciencedaily.com·May 22, 2026
Astronomers using NASA's James Webb Space Telescope have discovered TOI-199b, a giant planet the size of Saturn with Earth-like temperatures and a methane-rich atmosphere, located over 330 light-years away, marking it as one of the first detailed studies of a "temperate" gas giant.
The discovery of TOI-199b using the James Webb Space Telescope offers a significant breakthrough in exoplanet research, highlighting the potential for temperate gas giants to possess Earth-like temperatures despite their massive size. This finding could reshape our understanding of atmospheric composition and thermal dynamics in exoplanets, paving the way for future studies on habitability and climate modeling in diverse planetary environments.