中国航天员首次“换乘”天外平安归来 神二十乘组状态良好创在轨驻留时长新纪录

Core Points - The Shenzhou-20 astronaut crew successfully returned to Earth aboard the Shenzhou-21 spacecraft, setting a new record for the duration of stay in orbit for Chinese astronauts [1][2] - This marks the first time Chinese astronauts have returned safely from space using a "transfer" method between crewed spacecraft [2] - The Shenzhou-20 crew's return was delayed due to a minor crack in the return capsule's window, which did not meet safety conditions for a return [2] - The crew spent a total of 204 days in orbit, completing four extravehicular activities and numerous scientific experiments in various fields [3] Summary by Sections Mission Overview - The Shenzhou-20 crew, consisting of astronauts Chen Dong, Chen Zhongrui, and Wang Jie, returned safely to the Dongfeng landing site on November 14 [1][2] - The mission was initially scheduled for November 5 but was postponed due to safety concerns [2] Safety Measures - The Chinese manned space program prioritized safety, activating emergency protocols and ensuring rapid response from all systems involved [2] Achievements - Chen Dong became the first Chinese astronaut to exceed 400 days in total time spent in space and holds the record for the most extravehicular activities performed by a Chinese astronaut [2] - The Shenzhou-20 crew's mission included significant scientific research in microgravity physics, space materials science, space life science, aerospace medicine, and technology [3]