NASA火星探测器“失联”，暴露超期服役隐患

Core Viewpoint - NASA's MAVEN spacecraft has lost contact with Earth after over 10 years in Mars orbit, raising concerns about the impact on Mars atmospheric research and the overall Mars exploration program [1][3][4] Group 1: MAVEN's Mission and Importance - MAVEN was launched in November 2013 and entered Mars orbit in September 2014, with the mission focused on studying Mars' upper atmosphere, ionosphere, and interactions with solar wind [3] - The spacecraft plays a crucial role as a communication relay for other Mars rovers, including the Perseverance and Curiosity rovers [4] Group 2: Current Status and Investigation - MAVEN lost contact with Earth on December 6, with telemetry data indicating all systems were functioning normally until it passed behind Mars [3] - NASA is currently investigating the loss of contact and working on potential solutions [3] Group 3: Implications of MAVEN's Loss - The loss of MAVEN could significantly impact ongoing research into Mars' atmosphere and climate evolution, as well as the communication capabilities for other Mars missions [4][5] - MAVEN's previous issues, including a three-month safe mode in 2022 due to an inertial measurement unit failure, highlight the systemic risks within NASA's Mars exploration program [4] Group 4: Future Considerations - NASA has been exploring next-generation orbital vehicles for Mars communication, but many plans have not materialized, with a proposed Mars Communication Orbiter project being canceled in the past [4] - The urgency for a commercial relay architecture is emphasized due to the aging fleet of Mars orbiters, which poses risks for future missions [5]