同时，火震数据显示，火星外核与内核之间存在约30%的波速跳变和约7%的密度差异。在此基础上，研究团队分析了内核的矿物组成。结 果显示，火星核并非纯铁镍构成，还可能包含12%至16%的硫、6.7%至9.0%的氧以及不超过3.8%的碳。这种含有轻元素的星核结构，为 火星磁场从早期活跃到如今沉寂的演化历程提供了重要线索，并为对比地球与其他类地行星的内部演化差异奠定了关键基础。 上述研究首次在地球以外的行星中确认了固态内核的存在，证实了火星与地球相似的核幔分异结构。科研团队发展的火星地震学方法，为未 来探月等任务利用地震学方法探测月球等星体深部结构提供了重要参考。这一成果标志着我国科研团队在行星内部结构探测领域迈出关键一 步，彰显了我国在行星科学与地球物理交叉研究中的创新能力与国际影响力。 9月3日，相关研究成果以Seismic Detection of a 600-km Solid Inner Core in Mars为题，在线发表在《自然》（Nature）上。研究工 作得到国家自然科学基金和中国科学院战略性先导科技专项（B类）等的支持。 据中国科学院消息，近日，中国科学技术大学教授孙道远与毛竹团队联合国外学者，在 ...

Core Insights - A significant breakthrough in planetary science has been achieved by a team from the University of Science and Technology of China, confirming the existence of a solid inner core on Mars with a radius of approximately 600 kilometers, primarily composed of a crystallized iron-nickel alloy rich in light elements [1][4] Group 1: Research Findings - The research utilized seismic data from NASA's InSight lander, marking the first confirmation of a solid inner core on Mars, which is a critical step in understanding the internal structure of planets [1][3] - The study identified key seismic phases, including the PKiKP phase, which serves as a direct indicator of the solid inner core, providing strong evidence for its existence [4][5] - The analysis revealed a 30% velocity jump and a 7% density difference between Mars' outer and inner core, indicating a complex internal structure [5] Group 2: Implications - This discovery enhances the understanding of the internal structure of terrestrial planets, confirming similarities between Mars and Earth regarding core-mantle differentiation [5] - The innovative seismic analysis methods developed in this research could serve as a reference for future lunar exploration and the study of other celestial bodies [5] - The findings underscore China's growing capabilities and influence in the field of planetary science and geophysics [5]