This is an automated archive made by the Lemmit Bot.

The original was posted on /r/todayilearned by /u/TheHabro on 2024-05-21 19:03:16+00:00.

Original Title: Til during The Carrington Event, the most intense geomagnetic storm in recorded history, on 1–2 September 1859, some telegraph operators were able to send and receive messages despite having disconnected their power supplies.