人類首次小行星防禦實驗：用人造衛星，命中了一顆170米的小行星

{"info":{"title":{"content":"人類首次小行星防禦實驗：用人造衛星，命中了一顆170米的小行星","en":"Mankind's first asteroid defense experiment: using an artificial satellite, it hit an asteroid of 170 meters"},"description":{"content":"導語科學界普遍認為，6500萬年前，有一顆直徑約為10到15公裡的小行星撞擊地球，導緻非鳥類恐龍滅絕，古生物界經曆了一次...","en":"IntroductionThe scientific community generally believes that 65 million years ago, an asteroid with a diameter of about 10 to 15 kilometers hit the earth, causing the extinction of non-avian dinosaurs."}},"items":[]}