The Carrington Event was the most powerful geomagnetic storm in recorded history, triggered by a massive solar flare on September 1, 1859, that caused spectacular auroras visible globally and disrupted telegraph systems with electrical shocks, fires, and messages sent without power. If a similar event occurred today, it could devastate modern technology, causing widespread blackouts, satellite failures, and communication breakdowns, with potential economic costs in the trillions of dollars. More info