月球上的水竟来自陨石?嫦娥六号月壤中发现“天外来物”
月球上的水竟来自陨石?嫦娥六号月壤中发现“天外来物”
  • 2026-04-20 10:45:44
    来源:箪瓢屡空网

    月球上的水竟来自陨石?嫦娥六号月壤中发现“天外来物”

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    \u003cdiv class=\"rich_media_content\"\u003e\u003c!--NO_AD_ERROR_2--\u003e\u003cp\u003e\u003c!--IMG_0--\u003e\u003c/p\u003e\n\u003cp class=\"news-corporation\"\u003e\u003c!--IMG_1--\u003e\u003c/p\u003e\u003cp class=\"jf-imgborder\" style=\"text-align: center\"\u003e\u003c!--IMG_2--\u003e\u003cspan class=\"jf-textformat\" data_src=\"https://images.shobserver.com/img/2025/08/25/l_cb20250825182412625067.jpg\" style=\"clear: both; color: #888888; display: block; font-size: small; padding: 12px 0; text-align: left\"\u003e嫦娥六号月壤中发现“天外信使”艺术想象图\u003c/span\u003e\u003c/p\u003e\u003cp\u003e隐藏在嫦娥六号月壤中的又一段太阳系秘史被破解。科学家从月壤中识别出主要分布于外太阳系小行星带的CI型陨石残留物。这不仅刷新了对内太阳系物质迁移机制的认识,也为未来月球水资源分布和演化研究提供了新方向。10月21日凌晨,成果发表于国际学术期刊《美国国家科学院院刊》(PNAS)。\u003cbr/\u003e\u003c!--NO_AD_0--\u003e\u003c!--EOP_0--\u003e\u003c/p\u003e\u003c!--PARAGRAPH_0--\u003e\u003cp\u003e陨石被称为“太阳系的信使”,是研究行星形成和演化历史的重要对象。但由于地球大气层和地质活动的影响,绝大多数陨石难以完好保存。尤其是CI型碳质球粒陨石,在地球陨石记录中占比不足1%。而月球因缺乏大气和地质活动,成为保存陨石撞击痕迹的“天然档案馆”。\u003c!--NO_AD_1--\u003e\u003c!--EOP_1--\u003e\u003c/p\u003e\u003c!--PARAGRAPH_1--\u003e\u003cp\u003e在\u003c!--SECURE_LINK_BEGIN_0--\u003e中国科学院\u003c!--SECURE_LINK_END_0--\u003e院士、中国科学院广州地球化学研究所研究员徐义刚、研究员林莽指导下,该所王锦团副研究员与博士生陈志铭等对嫦娥六号带回的\u003c!--SECURE_LINK_BEGIN_1--\u003e月壤\u003c!--SECURE_LINK_END_1--\u003e样品进行了细致分析,从中识别出来自CI型陨石的撞击残留物。\u003c/p\u003e\u003cp class=\"jf-imgborder\" style=\"text-align: center\"\u003e\u003c!--IMG_3--\u003e\u003cspan class=\"jf-textformat\" data_src=\"https://images.shobserver.com/img/2025/08/25/l_CB20250825182438055016.jpg\" style=\"clear: both; color: #888888; display: block; font-size: small; padding: 12px 0; text-align: left\"\u003e嫦娥六号月壤中识别出的撞击体残留物碎片\u003c/span\u003e\u003c/p\u003e\u003cp\u003eCI型陨石的母体小行星主要分布在外太阳系小行星带,它富含水与有机质等挥发性成分。通过对这些残留物开展系统研究,科研人员提出,这些碎片是CI型碳质球粒陨石母体撞击月球表面、发生熔融后,快速冷却结晶的产物。进一步统计表明,此类陨石在月球表面的比例远高于地球,说明碳质陨石对地月系统的撞击贡献可能被严重低估。\u003cbr/\u003e\u003c!--NO_AD_2--\u003e\u003c!--EOP_2--\u003e\u003c/p\u003e\u003c!--PARAGRAPH_2--\u003e\u003cp\u003e该发现不仅表明外太阳系物质可以向内太阳系迁移,还对解释月球表面水的来源具有重要意义。研究人员认为,此前在月球样品中检测到的具正氧同位素特征的水,很可能来自这类陨石的撞击贡献。\u003c!--NO_AD_3--\u003e\u003c!--EOP_3--\u003e\u003c!--NO_AD_4--\u003e\u003c!--EOP_4--\u003e\u003c/p\u003e\u003c!--PARAGRAPH_4--\u003e\u003c!--PARAGRAPH_3--\u003e\u003cstyle\u003e.rich_media_content{--news-tabel-th-night-color: #444444;--news-font-day-color: #333;--news-font-night-color: #d9d9d9;--news-bottom-distance: 22px}.rich_media_content p:not([data-exeditor-arbitrary-box=image-box]){letter-spacing:.5px;line-height:30px;margin-bottom:var(--news-bottom-distance);word-wrap:break-word}.rich_media_content{color:var(--news-font-day-color);font-size:18px}@media(prefers-color-scheme:dark){body:not([data-weui-theme=light]):not([dark-mode-disable=true]) .rich_media_content p:not([data-exeditor-arbitrary-box=image-box]){letter-spacing:.5px;line-height:30px;margin-bottom:var(--news-bottom-distance);word-wrap:break-word}body:not([data-weui-theme=light]):not([dark-mode-disable=true]) .rich_media_content{color:var(--news-font-night-color)}}.data_color_scheme_dark .rich_media_content p:not([data-exeditor-arbitrary-box=image-box]){letter-spacing:.5px;line-height:30px;margin-bottom:var(--news-bottom-distance);word-wrap:break-word}.data_color_scheme_dark .rich_media_content{color:var(--news-font-night-color)}.data_color_scheme_dark .rich_media_content{font-size:18px}.rich_media_content p[data-exeditor-arbitrary-box=image-box]{margin-bottom:11px}.rich_media_content\u003ediv:not(.qnt-video),.rich_media_content\u003esection{margin-bottom:var(--news-bottom-distance)}.rich_media_content hr{margin-bottom:var(--news-bottom-distance)}.rich_media_content .link_list{margin:0;margin-top:20px;min-height:0!important}.rich_media_content blockquote{background:#f9f9f9;border-left:6px solid #ccc;margin:1.5em 10px;padding:.5em 10px}.rich_media_content blockquote p{margin-bottom:0!important}.data_color_scheme_dark .rich_media_content blockquote{background:#323232}@media(prefers-color-scheme:dark){body:not([data-weui-theme=light]):not([dark-mode-disable=true]) .rich_media_content blockquote{background:#323232}}.rich_media_content ol[data-ex-list]{--ol-start: 1;--ol-list-style-type: decimal;list-style-type:none;counter-reset:olCounter calc(var(--ol-start,1) - 1);position:relative}.rich_media_content ol[data-ex-list]\u003eli\u003e:first-child::before{content:counter(olCounter,var(--ol-list-style-type)) '. 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