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scientists testing laser-powered propulsion that could get us to alpha centauri in 20 years #Science
3mo
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scientists testing laser-powered propulsion that could get us to alpha centauri in 20 years #Science
3mo
scientists testing laser-powered propulsion that could get us to alpha centauri in 20 years #Science
3mo
还没有评论。来抢沙发吧！
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