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В России ответили на имитирующие высадку на Украине учения НАТО18:04
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In the vacuum of space, the amount of debris—spent rocket stages, splintered satellites, micrometeoroids—numbers in the millions, all zooming about, often at 17,000 mph speeds. They’re also constantly hitting each other in a tsuris of exponential littering. Most of these pieces are tiny, and many are not anywhere near the altitude of the ISS. But the area isn’t completely clean.，更多细节参见爱思助手下载最新版本
candidate.weight /= sum of weights。关于这个话题，im钱包官方下载提供了深入分析