Core Points - The Shenzhou-21 manned spaceflight mission will conduct domestic rodent space science experiments in orbit for the first time [2] - Four mice were selected from 300 candidates after over 60 days of rigorous training to accompany astronauts on the Shenzhou-21 mission [6] Summary by Category Mission Overview - The Shenzhou-21 mission is set to implement space science experiments involving rodents, marking a significant milestone in domestic space research [2] Selection Process - The selection of the four mice involved a competitive process, highlighting the challenges and rigorous training required to prepare them for space travel [6]

Core Points - China will conduct its first space science experiment involving domestic rodent mammals in orbit, utilizing four mice (two males and two females) for in-orbit breeding [2] Group 1 - The experiment aims to study the effects of microgravity and closed environments on the behavior patterns of mice [2]

Core Insights - China will conduct its first domestic space science experiment involving rodent mammals in orbit, utilizing four mice (two males and two females) to study the effects of microgravity and confined space on their behavior patterns [1] Group 1 - The experiment aims to investigate the impact of space conditions on the behavior of mice [1] - The selection of both male and female mice indicates a comprehensive approach to understanding behavioral differences [1]

Core Viewpoint - China will conduct its first domestic space science experiment involving terrestrial rodents in orbit, utilizing four mice (two males and two females) to study the effects of microgravity and confined space conditions on their behavior patterns [1] Group 1 - The experiment aims to investigate the impact of weightlessness and closed environments on the behavior of mice [1] - The selection of both male and female mice indicates a comprehensive approach to understanding behavioral differences based on sex in space conditions [1]

Core Insights - The Shenzhou-20 crew has been in orbit for over 170 days, with their mission nearing completion, and various space science experiments are being conducted as planned [1] Group 1: Space Science Experiments - In the field of aerospace medicine, the crew has conducted multiple experiments including behavioral tests related to perception and cognitive abilities during long-term space flight [1] - The crew has also collected and preserved saliva samples to study the impact of long-term space flight on gut microbiota and metabolism [1] - In materials science, the crew has completed sample cleaning and maintenance tasks, and installed microbial control technology samples [3] Group 2: Health Monitoring and Maintenance - The crew has performed ultrasound examinations on abdominal, muscular, and cardiovascular health, providing data for ground research teams to monitor astronaut health [6] - Continuous equipment checks and station management tasks are being carried out to ensure operational efficiency [6] Group 3: Mission Accomplishments - The Shenzhou-20 crew has successfully completed the in-orbit rotation with the Shenzhou-19 crew and has engaged in various scientific and technical tasks [9] - The crew has conducted four extravehicular activities, including the installation of space debris protection devices and inspections of external equipment [11] - The crew is preparing for the arrival of the Shenzhou-21 crew and is organizing research samples and materials for return to Earth [13]

Core Points - The Shenzhou 20 mission has been ongoing for over 170 days, with astronauts Chen Dong, Chen Zhongrui, and Wang Jie preparing for their return [1] - Various space science experiments have been conducted as planned, including research in space medicine and material science [1] - The astronauts are set to welcome the Shenzhou 21 crew for an in-orbit handover and will prepare research samples and materials for return to Earth [3] Group 1 - The Shenzhou 20 astronauts have completed multiple experiments in space medicine, including studies on visual fields and cognitive monitoring [1] - In the field of space materials science, the crew has performed maintenance tasks and sample changes in the experimental chamber [1] - The astronauts have also installed samples for the fifth batch of microbial control technology experiments [1] Group 2 - The upcoming arrival of the Shenzhou 21 crew will facilitate an in-orbit handover process [3] - The astronauts will undergo physical training and medical checks in preparation for their return [3] - Research samples and materials will be categorized and packed for return to Earth [3]

Core Insights - The Shenzhou 20 crew has been in orbit for over 170 days, with various space science experiments being conducted as part of their mission [1] Group 1: Space Science Experiments - In the field of aerospace medicine, the crew has conducted multiple behavioral tests using a laptop and related equipment, focusing on visual perception and cognitive abilities during long-term spaceflight [2] - The crew has also collected and preserved saliva samples to study the impact of long-duration spaceflight on gut microbiota and metabolism [4] - Ongoing experiments in space materials science include sample cleaning and maintenance of experimental equipment [6] Group 2: Health Monitoring and Maintenance - The crew has performed ultrasound examinations on abdominal, muscular, and cardiovascular health, providing data for ground research teams to monitor astronaut health [9] - Continuous equipment checks and station management tasks are being carried out to ensure operational efficiency [9] Group 3: Mission Accomplishments and Future Tasks - Since arriving at the space station on April 24, 2025, the Shenzhou 20 crew has completed various scientific experiments and technical tasks, including in-orbit rotation with the Shenzhou 19 crew and medical training [10] - The crew has conducted four extravehicular activities, including the installation of space debris protection devices and inspections of external equipment [12] - Preparations for the arrival of the Shenzhou 21 crew and the return mission are underway, including physical training and packaging of research samples for return to Earth [14]

Core Points - The Shenzhou 20 astronaut crew celebrated the 76th anniversary of the founding of New China from space, expressing pride in their achievements and gratitude for national support [1][2] - The crew has been in orbit for over 150 days, completing four extravehicular activities, marking them as one of the two crews with the most extravehicular tasks [1] - The astronauts are conducting various experiments in fields such as life sciences, microgravity physics, and new space technologies during their time on the space station [1] Group 1 - The Shenzhou 20 crew members expressed their feelings of pride and honor while observing Earth from space, highlighting the successful harvest from the "space vegetable garden" [1] - The crew is preparing for the arrival of the Shenzhou 21 team and is committed to completing their scientific experiments [2] - The astronauts conveyed their deep affection for their homeland, wishing for the prosperity and stability of the nation [2]

Group 1 - The Shenzhou-20 crew has successfully conducted various space science experiments, unlocking new experiences in the process [1] - In the field of space medicine, astronauts completed multiple experimental tests using laptops and related software, focusing on fine motor control and metacognitive monitoring [3] - The upgraded space vegetable garden has yielded a successful harvest of lettuce, with the crew completing collection and storage work [5] Group 2 - In the field of microgravity physical science, the crew performed several experiments, including the replacement of combustion cabinet components and conducting pressure emergency drills [7] - Regular maintenance of station equipment is crucial for health assurance, with the crew conducting inspections and maintenance on low-temperature storage devices [11] - Health maintenance activities included exercise testing and the use of neuromuscular stimulators to combat muscle atrophy [13]

Core Insights - The Shenzhou-20 astronaut crew is making steady progress in various space science experiments within the national space laboratory [1] Group 1: Space Science Experiments - The crew is conducting multiple projects in the field of space medicine, including studies on visual fields and executive function training [3] - Experiments related to microgravity's impact on cognitive relationships and the dynamics of astronaut trust in AI assistants are being carried out [3] - The crew performed vascular ultrasound examinations to explore blood flow patterns in a microgravity environment [5] Group 2: Equipment Maintenance and Health Assurance - Routine maintenance tasks such as checking the regenerative life support system and environmental monitoring have been completed [6] - The crew is actively engaged in health maintenance activities, including quality measurements and hearing tests, as well as physical exercise to counteract the physiological effects of microgravity [8] Group 3: Human Factors Research - The crew is conducting in-orbit tests on the changes in operational force under typical long-duration postures, analyzing differences in push-pull and rotational forces [7] - Preparations for future experiments in space life sciences are underway, including the installation and testing of a universal biological culture module [7]