标签 探测器

标签: 探测器

撞击小行星来保护地球,可行吗?

【新三才首发】美国太空总署(NASA)发起了一项故意将太空探测器撞向小行星的任务,以便了解日后如果有巨大的太空陨石即将撞击地球而消灭地球上生命时,究...
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