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我国发现“亚洲锂腰带”，长度达2800公里，这一发现意味着什么？有啥科学解释？

通讯｜“我们有一个英雄，在这里，也在中国”——记苏联飞行大队长库里申科纪念雕像故乡落成

2028年提供太空旅游服务！我国首个全球开放商业航天动力系统测试平台在从化落成

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