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In 1859, a solar storm, also known as the Carrington event (after the astronomer Richard Carrington, who first recognized the cause) fried the telegraph system.
Another powerful space weather event in 1989 caused a blackout in Quebec, Canada. Other storms have led to diverted airplanes and impaired telecommunications satellites.
Earlier this year, a group of experts from around the country, including Balstad, issued a report to the National Academies of Sciences on the economic and social impacts of solar storms.
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