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.
【事件】前不久，有网友收到了同学寄来的礼物，但因造型稍显奇特而不知从何下手，于是发帖求助：“广西同学寄来的礼物，能吃吗？”评论区网友纷纷答疑解惑，不仅揭秘礼物的真实身份——腊鸭，还细心介绍了食用方法。从“能吃吗”的疑惑，到网友们“像翼龙”的调侃，再到本地人的贴心科普，看似寻常的年货照见真诚而热烈的情谊，让春节更添暖意。，这一点在safew官方下载中也有详细论述
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