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55年的岁月流逝在浩瀚的太空深处东方红一号还在飞行作为中国第一颗人造卫星设计时寿命只有20天却凭借稳定的性能坚持运转了几十年半个世纪的旅程铭刻了中国航天的早期成就#科普#宇宙探索#探索发现
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55年的岁月流逝在浩瀚的太空深处东方红一号还在飞行作为中国第一颗 …
89 views2 weeks ago
YouTube科普仙儿
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