微隕石

微隕石是在地球表面收集到來自地球之外的小天體，大小範圍從50微米至2毫米。微隕石是進入地球大氣層而倖存下來的流星塵。它們從大小、組成都與隕石不同，並且數量、種類更為豐富，其中也包括較小的星際塵埃的顆粒（IDPs），是宇宙塵的一部分。流星體以高速（至少11Km/s）進入地球的大氣層，經過加熱和大氣的磨擦和壓縮。目前已經在地球上蒐集到，來自地球之外個別微隕石的質量在10⁻⁹和 10⁻⁴公克之間。 弗雷德·惠普爾首先創造了微隕石這個名稱來描述落在地球上如灰塵大小的天體。有時，隕石和微隕石在進入地球大氣層時是被看見的流星，但不論它們能否墬落到地球表面，隕石和微隕石依然都存在著。

相關條目

• 碳質球粒隕石：球粒隕石的一種，至少已經有7個群組和許多尚未分類的。
• 亞利桑那州立大學的隕石研究中心
• 宇宙塵
• 隕石學辭彙
• 火星隕石列表
• 隕石礦物列表
• 火星的隕石列表
• 隕石分類
• Meteoritical Society
• 太陽系
• The British and Irish Meteorite Society

進階讀物

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外部鏈結

• Meteoroids Page at NASA's Solar System exploration
• Current meteorite news articles
• International Meteorite Collectors Association News and information about meteorite collecting and authentication ethics
• Planetary Science Research Discoveries: meteorite articles and photographs
• The British and Irish Meteorite Society
• Types of extraterrestrial material available for study
• The Natural History Museum's meteorite catalogue database
• Meteoritical Society
• Earth Impact Database