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.
（九）加强科普社会化协同合作。高校应加大与各级科协、学会、科普场馆、企业等的深度合作，共建馆校科普实验室，促进科研成果科普化首台（套）展品开发及科普资源共建共享。积极对接国家智慧教育公共服务平台、科普中国等平台及主流媒体，扩大优质科普内容传播覆盖面。鼓励高校开展国际科技人文交流，拓展科普交流合作渠道。，详情可参考搜狗输入法2026
美股收盘：道指月线10连涨，美国KBW银行指数创去年4月来最大单日跌幅，更多细节参见51吃瓜
Introduction to events: event propagation — MDN Web Docs