Core Viewpoint - The Shenzhou-20 crew successfully completed their third extravehicular activity (EVA) on August 15, 2023, marking significant advancements in China's space exploration efforts, particularly with the integration of AI technology in supporting astronaut tasks [1][7][15]. Group 1: Extravehicular Activity Details - Astronaut Chen Dong conducted his sixth EVA, becoming the Chinese astronaut with the most EVAs to date [1][4]. - Astronaut Wang Jie performed his first EVA, making him the second flight engineer to conduct an extravehicular activity [4][7]. - The crew completed tasks including the installation of space debris protection devices and external equipment inspections [7]. Group 2: AI Integration - The "Wukong AI" model, developed based on domestic open-source models, was utilized for the first time in China's space station to assist astronauts during their EVA [7][9]. - The AI model provided intelligent and specialized support, enhancing the efficiency of astronauts' operations in orbit [13][15]. - The AI system demonstrated stable performance over a month, receiving positive feedback from the crew, indicating a significant advancement in the intelligent application of space station operations [15].

Core Points - The Shenzhou-20 crew successfully completed their third extravehicular activity (EVA) on August 15, 2023, lasting approximately 6.5 hours [1] - Astronaut Chen Dong became the Chinese astronaut with the most EVAs, marking his sixth outing [3] - The main tasks included inspecting key equipment and facilities outside the space station, which will aid in future model development and thermal control technology [5][6] Summary by Sections - **EVA Completion** - The Shenzhou-20 crew, consisting of Chen Dong, Chen Zhongrui, and Wang Jie, completed their third EVA successfully [1] - The EVA involved critical tasks such as the installation of space debris protection devices and external facility inspections [6] - **Astronaut Activities** - Chen Dong opened the hatch and exited the module, becoming the astronaut with the highest number of EVAs in China [3] - Wang Jie conducted his first EVA, becoming the second flight engineer to perform an extravehicular activity [5] - **Technical Objectives** - The EVA focused on identifying thermal characteristics of key external equipment to analyze their operational status [5] - The data collected will support future developments in thermal control technology and spacecraft design [5]

Core Viewpoint - The Shenzhou-20 crew successfully conducted their first extravehicular activity (EVA) from the node module of the Chinese space station on May 22, marking the 20th EVA in the station's history since the last one on December 26, 2021 [1][3]. Group 1: EVA Details - The Shenzhou-20 crew began their work early in the morning at around 2 AM, requiring them to close three hatches and perform airtight checks before exiting [3]. - The node module's exit hatch is 15 centimeters smaller in diameter compared to the hatch of the Wentian airlock module, adding to the complexity of the EVA [3][5]. Group 2: Reasons for Node Module EVA - The node module serves as a backup airlock for the Wentian module, necessitating its periodic activation to ensure functionality [5]. - The EVA involved installing four protective devices at different locations on the space station, which required a more efficient exit from the centrally located node module [5]. Group 3: Achievements - Astronaut Chen Dong became the first astronaut to complete EVAs from both the Wentian airlock and the Tianhe node module, showcasing the versatility and capability of the crew [5].

Core Points - The Shenzhou-20 mission successfully conducted its first extravehicular activity (EVA) with astronauts Chen Dong, Chen Zhongrui, and Wang Jie collaborating closely with ground support [1][11] - This EVA marked the first for astronaut Chen Zhongrui and the fourth for Chen Dong, who became the first astronaut to exit both the weather observation airlock and the node cabin [1][3] Summary by Sections - **EVA Details** - Astronaut Chen Dong opened the node cabin door, allowing light from space to enter [3] - The node cabin's exit is smaller in diameter by 15 centimeters compared to the weather observation airlock, requiring careful maneuvering during the EVA [5] - The astronauts completed approximately 8 hours of extravehicular activities before returning to the node cabin [9] - **Mission Achievements** - The EVA successfully installed a previously transferred space debris protection device and conducted inspections and maintenance of external equipment [7] - This mission validated the assembly construction model where equipment is operated before astronauts exit, providing valuable insights for future large-scale assembly operations [11] - The new space debris protection device enhances the safety and stability of the space station's operations [11]