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“星链”半年来变轨14万多次防碰撞
Ke Ji Ri Bao· 2025-07-31 23:57
Core Insights - SpaceX's Starlink satellites executed over 144,000 maneuvers to avoid collisions in the six months from December to May, which is 2.8 times more than the previous six months [1] - The first generation of Starlink satellites performed 59,414 maneuvers, while the second generation executed 84,990 maneuvers, totaling 144,404 maneuvers [1] - Currently, there are over 8,000 Starlink satellites in orbit, and if the number reaches 12,000, it is estimated that 90% of near-miss incidents will involve Starlink satellites [1] Group 1 - SpaceX reported that its collision avoidance measures led to a significant increase in the number of maneuvers, with 50,666 maneuvers in the previous six months [1] - The company stated that it proactively deorbits satellites before critical subsystem failures occur, which results in many satellites being removed from orbit that may never fail [1] - SpaceX criticized competitor AST's Bluebird satellite for underestimating collision risks and failing to assess the potential threat to human life from satellites re-entering the atmosphere [2] Group 2 - Experts noted that while Starlink's maneuvers aim to prevent collisions, they may complicate collision predictions for other organizations [2] - In 2021, 50% of near-miss incidents involving spacecraft were related to Starlink, despite having only 1,700 satellites at that time [1] - The reliance on autonomous collision avoidance systems by Starlink may introduce additional complexities in collision prediction for other space entities [2]