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.
正如微信以社交关系为底座，逐步托举起公众号与视频号，抖音也在尝试用自身强大的算法能力，逐渐扩展自己的产品边界。只是不同于天然承载阅读场景的微信，在娱乐属性高度集中的抖音生态中，这些更重知识与深度的长文内容，能否真正进入用户心智，仍有待观察。
。关于这个话题，im钱包官方下载提供了深入分析
昨日，vivo 正式宣布将参展 2026 年世界移动通信大会（MWC 2026）。
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