直擊太空碎片
所屬欄目：走近科學
所屬頻道：CCTV-10科教
年份：2010
展開全部
簡介：2008年2月，美國將發射導彈，擊毀飛行中的報廢衛星，由此會形成的大量空間碎片在太空自由飛行，這會不會對我國在幾個月後要發射的神舟飛船和航天員出艙活動有影響呢？一時間氣氛十分緊張，科研人員必須在他們實施攔截行動之前做出分析，以提供應對措施。要分析在太空導彈擊毀失控衛星，必須認清它們的飛行軌跡，這樣才能找到擊毀後爆炸碎片飛行的範圍，可是這些都是未知的，這是一場與時間賽跑的較量。實踐證明，預測的攔截高度與實際相近，攔截後碎片的留軌特性與預測結果基本吻合。收起
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