In a landmark discovery published in Nature on September 3, researchers led by Prof. SUN Daoyuan and Prof. MAO Zhu from the University of Science and Technology of China, together with international collaborators, have provided the first seismic evidence for a solid inner core (IC) on Mars. By analyzing data from NASA’s InSight mission, the team estimated the Martian inner core’s radius to be about 600 kilometers and found it to be composed mainly of a crystallized iron-nicke