Scientists found a ‘Mega-Earth’ 2.5 times the size of Earth with a core 23 times its mass; but it didn’t develop the massive atmosphere expected of a planet this large, and researchers are trying to find out why

The discovery of GJ 523b, an exoplanet more than twice the size of Earth, has shaken scientists' understanding of rocky planet formation. This Mega-Earth, studied using TESS and Webb telescope data, showcases a significant core and a surprisingly light atmosphere. These intriguing findings highlight the need for further research to fully grasp the complexities of such unique celestial entities, as GJ 523b blurs the lines of conventional planetary science.