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自带毒气的奇特星际彗星：富含一氧化碳冰
source link: https://tech.sina.com.cn/d/s/2020-04-23/doc-iirczymi7861744.shtml
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新浪科技讯北京时间4月23日消息，鲍里索夫彗星（2I/Borisov）是一颗来自太阳系以外的星际彗星。观测结果显示，这颗彗星被一团有毒气体包裹，而这些气体是在已知最冷的环境中形成的。美国国家航空航天局（NASA）戈达德太空飞行中心的研究人员
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