Facebook post by University of Helsinki

Researchers were able to track down the strongest known solar storm through trees growing in Lapland. It occurred in the spring of 774. “Trees are a memory stock of the past," quips Markku Oinonen, director of the Laboratory of Chronology at the Finnish Museum of Natural History, University of Helsinki.
Fiercest solar storm in history dated through trees growing in Lapland | University of Helsinki helsinki.fi

Should a storm of similar magnitude occur now, it would have dramatic consequences, including damage to modern navigation and communication satellites and fatalities among the astronauts in space. A study carried out by the University of Helsinki, the N...