Core Points - The Shenzhou 20 crew has been in orbit for two months since April 25, successfully adapting to the microgravity environment and completing multiple space science experiments and tasks [1][5][7] - The crew conducted the first-ever space regeneration experiment on planarians, exploring the effects of microgravity and radiation on their regeneration mechanisms [5] - The Shenzhou 20 crew performed their first extravehicular activity, installing a space debris protection device and conducting inspections of external equipment [5][7] Group 1 - The Shenzhou 20 crew, consisting of Chen Dong, Chen Zhongrui, and Wang Jie, met with the Shenzhou 19 crew in space, marking the sixth "space rendezvous" in China's space history [3] - The two crews completed an in-orbit handover on April 27, continuing their collaborative efforts in the Chinese space station [3] - The Shenzhou 20 crew is currently in good condition, and their various space science experiments are progressing steadily [7] Group 2 - The crew has been involved in multiple projects, including studies on trust and collaboration mechanisms, visual motion gravity characterization, and microgravity relationship cognition [7] - They utilized ultrasound diagnostics to examine blood vessels and conducted various tests related to memory, strength, and heavy object handling [7] - Research on the effects of microgravity on microorganisms, specifically Streptomyces, was also conducted, focusing on growth, differentiation, and biological activity [7]

Core Insights - The Shenzhou 20 astronaut crew, consisting of Chen Dong, Chen Zhongrui, and Wang Jie, has been successfully conducting various space science experiments for over 50 days in orbit, with all crew members in good condition [1] Group 1: Medical Experiments - The crew has completed multiple research projects in the field of aerospace medicine, utilizing equipment such as visual function measurement devices and eye trackers to conduct tests on "trust and collaboration mechanisms," "visual motion gravity characterization," "metacognitive monitoring research," and "microgravity relationship cognition" [1] - Ultrasound diagnostics were performed to examine blood vessels, collecting hemodynamic parameters under different durations in orbit for further research [3] - The crew conducted fine motor measurement tests, including memory sliding tests, strength tests, and heavy object tests, to accumulate data on the changes in fine motor control and cognitive mechanisms under microgravity conditions [3] Group 2: Biological and Physical Experiments - Research on the effects of microgravity on microorganisms is ongoing, focusing on the growth, development, differentiation, and biological activity of Streptomyces, as well as population succession changes and mechanisms [4] - The crew utilized a scientific glovebox to collect liquid culture samples, which were then frozen for return to Earth [4] - In the physical domain of microgravity, the crew completed maintenance tasks such as replacing sampling covers in the combustion cabinet and cleaning the container-free cabinet [4] Group 3: Health Monitoring - The Shenzhou 20 crew conducted traditional Chinese medicine diagnostics, 12-lead electrocardiograms, and dynamic blood pressure monitoring, while also engaging in physical exercise to counteract the physiological effects of weightlessness [6]