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New Scientist

Radioactive dust in Antarctic ice could help map interstellar clouds

14 Aug 2019, 15:00 UTC
Radioactive dust in Antarctic ice could help map interstellar clouds Michael Studinger/NASA

Radioactive iron buried in Antarctic snow must have come to Earth from interstellar dust, according to a new study. This suggests that Antarctic snow and ice of different ages could be used to tell us about the patches of interstellar dust Earth has passed through, and so track its path across the Milky Way.

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