A cosmic storm in 993 released a pulse of radiation so powerful that it was recorded in the rings of the world’s trees. That solar event helps pinpoint the year the Vikings were present in the Americas on.natgeo.com/30AmWPi
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@NatGeo Amazing ! These kind of event make us feel very little. 🐜
@NatGeo How much do we know about that pulse of radiation taking out their infrastructure?
@NatGeo I guess I need to update the Vikings lecture for the spring with a real date that isn’t just c. 1100!