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天宫一号“再入”大气层开启倒计时 再令全球瞩目
source link: http://tech.sina.com.cn/d/s/2018-03-30/doc-ifystpzf9687012.shtml
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本报记者刘扬随着再入大气层时间的临近，中国自主研制的首个载人空间试验平台——天宫一号再次引起公众和航天爱好者的关注。天宫一号目前在轨状态如何？它将何时再入大气层？它的再入过程是否像某些媒体担忧的那样可能造成一定风险呢？中国相关机构又做了哪些
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