美航天局继续尝试联络失联的火星探测器

Core Viewpoint - The Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has lost contact with its ground team since December 4, and NASA is currently attempting to re-establish communication with the spacecraft [1] Group 1: Communication Issues - Since December 4, no telemetry data has been received from the MAVEN spacecraft, indicating a significant communication failure [1] - A brief segment of telemetry data from December 6 was recovered, revealing an unexpected rotation of the spacecraft after it passed behind Mars [1] - Further analysis suggests that the spacecraft's orbit may have changed, prompting the mission team to continue tracking data to determine the cause of the signal loss [1] Group 2: Impact on Other Missions - NASA is working to mitigate the impact of MAVEN's anomaly on the operational Mars rovers, Perseverance and Curiosity, which rely on four Mars spacecraft for communication relay [1] - Of the four Mars spacecraft, three are still operational and maintaining normal communication functions [1] Group 3: Mission Background - MAVEN was launched in September 2014 and has been operational in Mars orbit for over 10 years [1] - The primary objective of MAVEN is to study the upper atmosphere of Mars, its ionosphere, and the interaction with solar wind, contributing to the understanding of atmospheric escape processes [1]