Scientists correct 155-year-old solar storm mix-up: Train delay was in 184
Scientists have corrected a 155-year-old historical error regarding a solar storm that allegedly disrupted telegraph lines in 1841. By analyzing railway records, researchers determined the incident actually occurred in 1848, as the railway line in question did not exist in 1841.
Why it matters
Correcting historical data is essential for accurately modeling the impact of solar activity on infrastructure, which is critical for modern grid security.
For more than 150 years, a reported 16-minute train delay in Exeter, England, was cited as a possible early example of a solar storm disrupting human technology. But a railway timetable revealed a problem with the story: the railway line in question did not exist in 1841. According to a report published by ScienceDaily on October 21, 2026, researchers have now traced the incident to October 18, 1848, using historical railway records, newspaper accounts and measurements of Earth’s magnetic field. The findings were published in the journal Space Weather.The train delay that could not have happened in 1841The mystery originated in an account published anonymously in the scientific journal Nature on October 5, 1871. It described a “very intense magnetic disturbance” on October 18, 1841, which allegedly interfered with railway telegraph equipment in Exeter, a city in southwest England.
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