一颗距离35光年的系外行星，表面熔融且大气富含硫，可能代表一种新的行星类别。 A 35-light-year-away exoplanet with a molten surface and sulfur-rich atmosphere may represent a new planetary class.

新发现的外行星L 98-59 d,位于35光年之外,可能属于以前未知的一类行星,其特点是深海、长寿的岩浆海洋和厚厚、富含硫的大气层。 A newly discovered exoplanet, L 98-59 d, located 35 light-years away, may belong to a previously unknown class of planets characterized by a deep, long-lived magma ocean and a thick, sulfur-rich atmosphere. 地球面积约为1.6倍,密度异乎寻常地低,含有硫化氢和其他挥发性气体,由熔化硅化物内部形成,在数十亿年的时间里捕获硫。 About 1.6 times Earth’s size, it has an unusually low density and contains hydrogen sulfide and other volatile gases, sustained by a molten silicate interior that traps sulfur over billions of years. 来自詹姆斯·韦伯空间望远镜和地面仪器的观测结果,加上计算机模型,表明地球受到恒星辐射、潮汐力和强大的温室效应的极端热力驱动,其表面持续熔化。 Observations from the James Webb Space Telescope and ground-based instruments, combined with computer models, suggest the planet’s extreme heat—driven by stellar radiation, tidal forces, and a strong greenhouse effect—keeps its surface molten. 这对传统的行星分类提出了挑战,并表明这种熔化的世界可能比想象中更为普遍,为行星的形成和演变提供了新的见解。 This challenges traditional planetary classifications and indicates such molten worlds may be more common than thought, offering new insights into planetary formation and evolution.