Group 1 - The core event is the press conference held by the Shenzhou 19 astronaut crew after their 183-day stay in space, where they shared their experiences and insights [1] - Astronaut Cai Xuzhe returned to the Tiangong space station just 22 months after his last mission, setting a record for the shortest time between missions for Chinese astronauts [2][3] - Cai described the feeling of returning to the space station as both familiar and strange, emphasizing the shift from being a crew member to leading a team [4][5] Group 2 - The Shenzhou 19 mission involved a significant challenge when a cargo adapter became stuck, requiring the astronauts to perform an emergency spacewalk to resolve the issue [6][7] - The first spacewalk lasted 9 hours, setting a new record for the longest spacewalk by Chinese astronauts and a world record for single spacewalk duration [6][7] - Astronaut Song Lingdong, the youngest member of the crew, expressed a strong sense of responsibility and teamwork during the mission [8][10] Group 3 - The crew conducted various scientific experiments, including breeding fruit flies in space, which is significant for understanding biological processes in microgravity [15][16] - Song Lingdong also successfully grew sweet potatoes in space, drawing on his childhood experience with gardening [17][18] - Astronaut Wang Haoze, the first female flight engineer, highlighted the challenges faced by female astronauts in training and execution of tasks [19][22] Group 4 - The Shenzhou 19 mission included over half new experiments and projects, with the crew collaborating closely with researchers to ensure successful execution [22] - Wang expressed pride in contributing female data to brainwave experiments, emphasizing the importance of diversity in scientific research [23] - The astronauts shared a deep emotional connection to their homeland, often looking for familiar landmarks from space and feeling a strong sense of belonging to both Earth and the space station [25][24]

Core Viewpoint - The significant budget cuts proposed by the U.S. government for NASA are raising widespread concerns about the future of the agency's scientific projects and space exploration initiatives [1][2]. Budget Cuts Impact - The new budget proposal could lead to the termination of approximately 41 ongoing or planned scientific missions, which represents about one-third of NASA's total projects [1]. - NASA's science project funding is set to be reduced by nearly half, marking a critical crisis for the U.S. space program [1]. - The White House's Office of Management and Budget has stated that NASA's annual expenditure of over $7 billion on nearly 100 scientific missions is "unsustainable" [1]. Specific Program Cuts - The budget demands a two-thirds reduction in funding for astrophysics, affecting key missions such as the VERITAS and DAVINCI+ Venus exploration projects, which are now uncertain [3]. - The Chandra X-ray Observatory's operational budget is proposed to be cut from $69 million to zero, jeopardizing its ongoing scientific contributions [3]. - The operational funding for the MAVEN satellite, which has been collecting data in orbit around Mars since 2014, is also set to be eliminated, risking its functionality and potential crash on Mars [3]. Strategic Shift - The proposed budget indicates a fundamental shift in NASA's focus, prioritizing lunar and Martian missions over other scientific endeavors, as the Trump administration aims to send astronauts to the Moon and Mars ahead of China [3].