04/07/2026
Confirmed: Vikings reached the Americas nearly 500 years before Columbus.
A study concludes that Norse explorers were present in what is now Newfoundland, Canada, in the year 1021 AD — nearly 500 years before Christopher Columbus arrived in the Americas in 1492.
The breakthrough came from three pieces of wood discovered at the Viking settlement of L'Anse aux Meadows. Each showed clear signs of being cut with metal tools, something Indigenous peoples in the region were not using at the time.
The real surprise was how researchers determined the date so precisely.
In 992 AD, Earth was struck by an exceptionally powerful solar storm. The event dramatically increased the amount of radioactive carbon-14 produced in the atmosphere, leaving a distinctive signature in tree rings around the world the following year.
Researchers found that unique carbon signal preserved in the wood. By counting 29 annual growth rings from the solar storm marker to the tree's bark, they determined the trees were cut in exactly 1021 AD.
That makes 1021 the earliest scientifically confirmed evidence of Europeans in the Americas.
Historians have long believed Norse explorers led by Leif Erikson reached North America centuries before Columbus, based largely on Icelandic sagas. But those accounts were written down hundreds of years after the events they describe and mix history with legend.
This discovery provides something much stronger: direct archaeological evidence with an exact calendar year.
Researchers say the Viking settlement was likely short-lived, and there is still much to learn about how long the Norse remained in North America and the extent of their interactions with Indigenous peoples.
But thanks to a solar storm that happened more than 1,000 years ago, scientists can now say with remarkable confidence that Europeans were present in the Americas in 1021 AD.
Learn more:
"Evidence for European presence in the Americas in AD 1021." Nature
