<b>Atomic-level structural responses of Chang'e-5 ilmenite to space weathering</b>

Space weathering records provide insights to better understand the formation and evolution of the lunar regolith. Ilmenite has contrasting responses to different space weathering processes. However, atomic-scale structural modification of ilmenite induced by different space weathering processes remains poorly understood. In this study, we investigate the effects of spacing weathering on lunar ilmenite grains returned from Chang’e-5 (CE-5) mission with the combination of transmission electron microscopy and thermodynamic modeling approaches.空间风化（space weathering）记录可为深入解析月壤（lunar regolith）的形成与演化提供关键依据。钛铁矿（ilmenite）对不同空间风化过程会表现出迥异的响应。然而，由不同空间风化过程诱导的钛铁矿原子级结构变化，迄今仍鲜有系统性研究与清晰认知。本研究结合透射电子显微镜（transmission electron microscopy）与热力学模拟方法，探究了嫦娥五号（Chang’e-5, CE-5）任务返回的月球钛铁矿颗粒所受空间风化的影响。