iridium 33
铱33
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The second was the accidental collision in 2009 of the Cosmos 2251 and Iridium 33 satellites.
BBC: UK design to 'harpoon' old satellites
The last major space debris collision was in 2009 between Iridium 33, an operational U.S. communications satellite, and Cosmos 2251, a decommissioned Russian satellite, Kelso said.
CNN: STORY HIGHLIGHTS
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