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There is a plan to prevent such a strike—the Space Surveillance Network, a bevy of sensors that the military uses to track space debris. NASA monitors what’s unofficially known as the “pizza box,” a sort of no-fly zone around the ISS. When pieces of debris are predicted to enter the box—if there’s at least a 1 in 100,000 chance of collision—mission controllers order avoidance maneuvers, firing thrusters that move the ISS and dodge the trash. The technique has been used dozens of times since the first ISS module launched in 1998. But the system only tracks about 45,000 larger pieces, and all sensors have noise. Plus, risk thresholds can miss stuff, sometimes badly. In 2025, Chinese astronauts were briefly stranded at their station after debris hit their return vehicle.
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巴爾金指出,北京認為特朗普(Donald Trump,川普)對歐洲咄咄逼人的姿態增強了自己對歐洲各國的影響力,但同時,在中國經濟問題艱困、美國市場仍對中國商品實施管制之際,北京也需要歐洲市場。因此北京盼望德國總理的訪問展現中德夥伴關係形象,同時將自己塑造成日益脆弱的地緣政治格局中穩定的保障者。
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