屡次推迟的登月计划可能提前 NASA哪来的自信？

Core Points - NASA announced that the first crewed lunar flyby mission, Artemis 2, is scheduled for April 2026, with a possibility of an earlier launch in February 2026, marking a shift from previous delays [1][3] - Safety remains the top priority for NASA as they aim to meet the new timeline for the Artemis 2 mission [1] - The Artemis program, initiated in 2019, aims to return humans to the Moon, with Artemis 1 having already completed an unmanned test flight [3] Summary by Sections Mission Timeline - The original plan for Artemis 2 was to complete it by 2024, followed by Artemis 3 in late 2025. However, both missions have faced multiple delays, with the latest schedule pushing Artemis 2 to April 2026 and Artemis 3 to mid-2027 [3][4] - NASA's adjustments to the timeline were influenced by technical issues, particularly concerning the Orion spacecraft's heat shield and life support systems [4] Technical Challenges - The Artemis program has encountered significant technical difficulties, with at least eight out of thirteen critical items falling behind schedule [4] - The Orion spacecraft, developed in collaboration with Lockheed Martin, faces design flaws, while the Space Launch System (SLS) rocket, developed with Boeing, has been criticized for delays and high costs [4] - The Starship, developed by SpaceX, is expected to replace the SLS in the future due to its ongoing development challenges [4][7] Space Suit Development - The development of new space suits for astronauts is another hurdle, as the current suits are outdated and do not meet the requirements for the Artemis 3 mission [7] - The company tasked with creating the new suits, Axiom Space, has indicated that a redesign is necessary to incorporate emergency life support systems [7] Future Prospects - Experts suggest that even if the Artemis 2 mission is successful, the timeline for Artemis 3 may still be optimistic, given the current state of the Starship and its readiness for lunar missions [7]