隕石擊穿屋頂！地質學家發現碎片比地球更古老 有45.6億年歷史
發布時間：2025/08/10 10:20:13
更新時間：2025/08/10 10:20:13
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圖、文／周刊王
美國喬治亞州一戶人家去年6月遭隕石擊中屋頂，造成屋頂、通風管道及室內天花板損毀。經地質學家鑑定，該隕石碎片已有約45.6億年歷史，比地球本身更古老。
根據外媒《紐約郵報》的報導，喬治亞大學地質學教授斯科特哈里斯（Scott Harris）表示，隕石來自火星與木星之間的小行星帶，於2024年6月26日墜落亞特蘭大附近，當時多名居民目睹一道火球劃過天際。
哈里斯在接受美國《福克斯數位新聞》訪問時指出，他接獲通報後立即趕往現場，並在房屋閣樓找到碎片入侵的路徑——隕石擊穿屋頂及通風管道後，穿過厚厚的隔熱層和約10英尺高的斜面天花板，最後落在地板，留下直徑約1.5公分的小坑。
哈里斯形容，撞擊威力巨大，部分隕石被完全粉碎，「就像被大錘擊打般碎裂」。進入地球大氣層時，該隕石甚至短暫突破音障。
根據哈里斯的說法，隕石的成分屬於太陽系早期形成的原始物質，可追溯至行星誕生前不久，是岩石行星的基本構成要素。地球的年齡約為45.4億年，因此這塊隕石比地球還早約2,000萬年形成。
雖然這次墜落的碎片體積不大，不會對人類構成威脅，但哈里斯強調，研究隕石動力學有助於科學家評估更大規模天體撞擊地球的風險，並探索防禦方法。
哈里斯提到，美國太空總署（NASA）數年前進行的DART任務便展示了「動能撞擊器」技術，可在小行星接近前提前改變其軌道，避免與地球相撞。
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