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4 6-billion-year-old space rock sheds light on early cosmos

「6万5000個に一つ」 太陽系誕生期の隕石を特定 仏研究:時事ドットコム

「6万5000個に一つ」 太陽系誕生期の隕石を特定 仏研究:時事ドットコム
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Scientists unearth meteorite

Scientists unearth meteorite March 17, 2021 Scientists believe they have identified a meteorite formed in the first million years of our solar system, making it the oldest known meteor of volcanic origin. The space rock, which began its journey some 4.5 billion years ago, has already proved an exceptional witness to the building blocks of the planets. Known as Erg Chech 002, the meteorite was discovered in May 2020 by meteor hunters in the Algerian Sahara desert. It had rested undisturbed for at least 100 years , according to Jean-Alix Barrat, a geochemist at France’s Brest University. In a recent study published in the Proceedings of National Academy of Sciences journal, Barrat and his colleagues describe its discovery and several rare features.

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