How You Prove a Storm Belongs to the Whole Planet
By the time the sky caught fire on the first of September, 1859, the one thing that might have reported it instantly across an ocean was already dead. The first transatlantic telegraph cable — the pride of 1858, the cable Queen Victoria used to congratulate a president — had failed the previous October, after barely three weeks of real service, burned out by an engineer applying too much voltage in his hurry to make it faster. So when the storm hit, humanity’s fastest working link between continents was silence. News still moved at the speed of steamships and the mail they carried.
And yet within two years, a mathematician at Yale named Elias Loomis had done something that should have been impossible without a single working wire: he’d proven, to the satisfaction of the scientific world, that the aurora over the Rocky Mountains, the aurora over Colombia, the readings jumping off the scale at Kew Observatory in London, and the telegraph fires in Boston were not four strange coincidences. They were one storm, wrapped around the entire Earth at once.
He proved it with letters.
Loomis wrote to observatories, to newspapers, to ship captains who’d logged the sky in their voyage records, on continents that had no way of comparing notes with each other in real time. He collected every independent account he could find and plotted them by hand onto a single map. None of those witnesses — the gold miners making breakfast at 1 a.m., the readers in Queensland by aurora-light, the operator in Norway knocked out by a shock from his own key — knew that anyone else, anywhere, had seen the same impossible thing that same night. The proof wasn’t in any one report. It was in how many independent, unconnected people described the same event without ever comparing stories.
That’s worth sitting with, because it’s a discipline that has nothing to do with telegraph cables or satellites and everything to do with how you tell the difference between an anecdote and a fact about the world. One vivid account, however sincere, is a story. A dozen accounts from people who couldn’t have coordinated is evidence. Loomis didn’t have instant communication. He had patience, a lot of postage, and a refusal to declare the world’s business settled until enough of the world had independently said the same thing.
Which is the quiet, uncomfortable footnote sitting underneath this video’s bigger warning. We’ll very likely see the next Carrington-class storm coming — a coronal mass ejection gives some hours to days of notice. What a storm strong enough to burn out transformers and blind satellites might also do, for a while, is take away the very thing that let 1866’s rebuilt cable, and everything wired after it, replace Loomis’s method with something faster and lazier: the assumption that if it’s on the wire, it’s already been checked. In September 1859, nothing was on the wire. Somebody still had to write it down, send it, and wait to see if the world agreed.
Watch it here:
Sources: Carrington Event — Wikipedia; “The Carrington Event: History’s Greatest Solar Storm” — Space.com; “A Perfect Solar Superstorm” — HISTORY.com; “One Swallow Does Not Make a Summer: 160 Years of Richard Carrington’s Legacy” (Kew Observatory, Balfour Stewart, Elias Loomis) — arXiv:1910.02795; “The Grand Aurorae Borealis Seen in Colombia in 1859” — arXiv:1508.06365; “Transatlantic Telegraph Cable” — Wikipedia / History.com (1858 cable failure, October 20, 1858).