中国空间站：神二十荣耀返航倒计时，神二十一接棒！

Core Insights - The Chinese space station has successfully hosted the Shenzhou 20 crew for over 180 days, marking a significant milestone in its operational timeline [2][11] - The crew has conducted multiple extravehicular activities and various scientific experiments, showcasing advancements in space medicine and microgravity physics [4][6][7] - The upgraded space vegetable garden has yielded fresh produce, highlighting the success of agricultural experiments in space [9] Group 1: Crew Activities - The Shenzhou 20 crew has completed four extravehicular activities, demonstrating their capabilities and the station's operational success [4] - The crew has engaged in experiments related to trust and collaboration mechanisms, fine motor control, and emergency decision-making, contributing valuable data for future space missions [6] Group 2: Scientific Research - Ongoing experiments in inertial particle dynamics have revealed unique particle movement patterns in microgravity, indicating potential for further research [7] - The successful cultivation of vegetables in the upgraded space garden reflects advancements in space agriculture technology [9] Group 3: Future Prospects - As the Shenzhou 20 crew prepares to return to Earth, the arrival of the Shenzhou 21 crew signifies continued collaboration and research opportunities in the space station [11]