atmosphere on other planets

The James Webb Space Telescope revealed the first detailed molecular and chemical portrait of a distant world's sky. The telescope’s array studied WASP-39 b, a planet nearly as massive as Saturn orbiting a star some 700 light-years away.…

The planet GJ 1132 b was born a gaseous world with a thick blanket of atmosphere and several times the radius of Earth. The "sub-Neptune" lost its primordial hydrogen and helium atmosphere because of intense radiation from its hot, young…