Mark Carney and Pierre Polievre offered condolences after nine people were shot dead in the town of Tumbler Ridge in British Columbia.
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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Медведев вышел в финал турнира в Дубае17:59，推荐阅读搜狗输入法2026获取更多信息
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10126-1，推荐阅读im钱包官方下载获取更多信息