Scientists solve 1840s space weather mystery

发生了什么

19th century Nature account of 1841 train delayed by geomagnetic storm got year wrong—due to a typo.

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时间线

1. 17:56
   Ars Technica 最先出现AArs Technica
2. 20:00
   Hacker News 出现讨论HHacker News

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