[Rerun] Stjernestøv på Jorden

from Science Stories · host Science Stories

Forskere identificerede for nylig det hidtil ældste materiale på Jorden, stjernestøv, der er 7 milliarder år gammelt, gemt væk i en massiv meteorit, der ramte vores planet for et halvt århundrede siden. Det vil sige meteoritten blev dannet næsten tre milliarder før jorden blev dannet. Disse presolære korn blev fanget ind i universet af døende stjerner og endte til sidst på Jorden i en asteroide, der faldt ned den i 1969 i Australien. Videnskabsjournalist Morten Remar fra Science Stories har talt med astronom Christoffer Karoff fra Geoscience Center ved Århus Universitet for at få en forklaring på opdagelsen og hvad det betyder for vores viden om solsystemets dannelse.

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This episode was published on January 14, 2022.

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