我国科学家确证，火星有个“核”

Core Viewpoint - Chinese scientists have confirmed the existence of a solid inner core on Mars, with a radius of approximately 600 kilometers, primarily composed of a crystalline iron-nickel alloy rich in light elements [2][4]. Group 1: Research Findings - The research team, led by Sun Daoyuan and Mao Zhu from the University of Science and Technology of China, collaborated with international scholars to analyze seismic data from NASA's InSight lander, leading to the conclusion about Mars' internal structure [3]. - The study revealed that Mars has a layered core structure, with an outer liquid core and a deeper solid inner core, which was identified through innovative seismic array analysis methods [3][4]. - Seismic data indicated a 30% wave speed jump and a 7% density difference between the outer and inner cores of Mars, suggesting a complex mineral composition that includes elements like sulfur, oxygen, and carbon [4]. Group 2: Implications and Future Research - This research provides significant insights into the evolution of Mars' magnetic field and establishes a critical foundation for comparing the internal evolution of Earth and other terrestrial planets [4]. - The innovative seismic methodology developed in this study offers important references for future lunar exploration and the use of seismology to investigate the deep structures of celestial bodies [4].