James Webb Detects Strongest Evidence Yet of an Atmosphere on a Rocky Exoplanet

An ultra-hot rocky exoplanet may be wrapped in a dense atmosphere, defying expectations about what small planets can sustain. Scientists working with NASA’s James Webb Space Telescope have found the clearest evidence so far that a rocky planet beyond our solar system has an atmosphere. Data from the ultra-hot super-Earth TOI-561 b indicate that the [...]