L 98-59d: A Volatile-Rich Molten World with a Sulfur-Storage Magma Ocean and Implications for a New Exoplanet Class

To the point

Led by Harrison Nichols, researchers propose that L 98-59d, a 1.6-Earth-radius super-Earth about 34.5 light-years away with a 7.5-day orbit, could have a global magma ocean storing sulfur and a hydrogen-rich atmosphere containing sulfur compounds like hydrogen sulfide, sustained by interior dynamics despite stellar X-ray stripping, pointing to a new class of volatile-rich magma-ocean worlds rather than a habitable planet.