On the afternoon of September 28, 2025, the 38th Deep Space Exploration Academic Salon was successfully held at 1958 Café on the East Campus of the University of Science and Technology of China. This salon focused on the cutting-edge research results of Mars' internal structure and attracted wide attention from many researchers, teachers and students inside and outside the university.

The salon invited Professor Daoyuan Sun from the University of Science and Technology of China, and his two students, Huixing Bi and Mingwei Dai, members of the research team, to jointly give a report on "Constraining Mars' Internal Structure Using Martian Seismic Data Recorded by InSight". Huixing Bi, with the title "The Secret of Mars' 'Heart' - Seismological Discovery of Mars' Solid Inner Core", delved into the mysteries of Mars' core. By analyzing the Martian seismic data recorded by the InSight probe, the key characteristics of Mars' solid inner core were revealed, providing important seismological evidence for the study of Mars' internal structure. Her report was rich in content, rigorous in argumentation and progressive in reasoning, presenting the latest progress in Martian core research to the participants.

Mingwei Dai (University of Science and Technology of China / currently on an exchange visit at the Paris Geophysical Institute in France) gave a report titled "Partially Molten Low-Velocity Zones Reveal That the Martian Mantle Is Still Active", sharing his latest achievements in Martian mantle research. He pointed out that through seismological observations of the partially molten regions of the Martian mantle, it was found that the Martian mantle still has a certain degree of activity, and this discovery is of great significance for understanding the geological evolution of Mars. Mingwei Dai 's report has a unique perspective, bringing new insights and thoughts to the field of Martian mantle research.

This salon not only attracted nearly 40 teachers, students and researchers to participate offline, but also opened to domestic peers and a large number of scientific research enthusiasts through Tencent Meeting and Koushare Academic Live Broadcast (Link: https://www.koushare.com/space/330205/home). As of press time, the online view count has exceeded 6,000 person-times. The interactive Q&A session at the report site was in a lively atmosphere. Participants actively raised questions, and the two reporters answered patiently, achieving a remarkable communication effect.

The successful holding of this salon has provided an excellent communication platform for researchers in the field of deep space exploration, and promoted the collision and integration of academic ideas. As one of the important targets of deep space exploration, the study of Mars' internal structure is of far-reaching significance for revealing the formation and evolution of planets in the solar system. In the future, the Deep Space Exploration Academic Salon will continue to invite more experts and scholars to share cutting-edge research results, promoting the continuous development of China's deep space exploration cause.

We look forward to meeting all peers and scientific research enthusiasts again in future academic exchanges to jointly explore the mysteries of the universe.

More on-site updates: Deep Space Technology Research Institute https://planet.ustc.edu.cn/main/salon_list

Original paper: https://www.nature.com/articles/s41586-025-09361-9

第38期深空探测学术沙龙圆满落幕

火星探索成果引关注

2025年9月28日下午，第38期深空探测学术沙龙在中国科学技术大学东区1958成功举办。本次沙龙聚焦火星内部结构的前沿研究成果，吸引了众多科研工作者以及校内外师生的广泛关注。

本次沙龙邀请到了中国科学技术大学孙道远教授、毛竹教授科研团队成员毕慧星及代明伟共同做“利用洞察号(InSight)记录的火震数据约束火星内部结构”的报告。毕慧星博士以“火星‘心脏’的秘密——火星固态内核的地震学发现”为题，深入探讨了火星内核的奥秘。通过分析洞察号（InSight）探测器记录的火震数据，揭示了火星固态内核的关键特征，为火星内部结构的研究提供了重要的地震学证据。其报告内容丰富、论证严谨，推理层层递进，为与会者呈现火星内核研究的最新进展。

代明伟博士（中国科学技术大学/现在法国巴黎地球物理研究所交流访问）则以“部分熔融的低波速区揭示火星幔仍然活跃”为题，分享了其在火星幔研究方面的最新成果。他指出，通过对火星幔部分熔融区域的地震学观测，发现火星幔仍具有一定的活跃性，这一发现对于理解火星的地质演化历程具有重要意义。代明伟博士的报告视角独特，为火星幔研究领域带来了新的视角和思考。

本次沙龙不仅在线下吸引了近40名师生和科研工作者参加，还通过腾讯会议和蔻享学术直播（链接：https://www.koushare.com/space/330205/home）向国内同行和广大科研爱好者开放，截至发稿前，线上浏览量超6000千人次。报告现场互动问答环节气氛热烈，与会者积极提问，两位报告人耐心解答，交流效果显著。

此次沙龙的成功举办，为深空探测领域的科研人员提供了一个良好的交流平台，促进了学术思想的碰撞与融合。火星作为深空探测的重要目标之一，其内部结构的研究对于揭示太阳系行星的形成与演化规律具有深远意义。未来，深空探测学术沙龙将继续邀请更多专家学者分享前沿研究成果，推动我国深空探测事业的不断发展。

我们期待与各位同行和科研爱好者在未来的学术交流中再次相聚，共同探索宇宙的奥秘。