James Webb Telescope Detects 'Impossible' Atmosphere on Ancient Super-Earth

NASA's James Webb Space Telescope has uncovered the strongest evidence to date that a rocky exoplanet possesses an atmosphere, a discovery described as "impossible" due to its defiance of prior scientific expectations.

The planet, classified as an ancient super-Earth—larger than Earth but rocky in composition—shows atmospheric signatures that challenge current models of planetary formation and stability for terrestrial worlds.

A team of astronomers led by the Carnegie Institution for Science utilized JWST's advanced instruments to achieve this clearest detection yet of an atmosphere on a rocky exoplanet, underscoring the telescope's revolutionary capabilities.

This finding, reported by Science Daily, opens new avenues for studying exoplanet habitability and could reshape our understanding of how atmospheres evolve on distant, rocky planets.