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September 2, 1859 | The Carrington Geomagnetic Storm Reaches Earth

On September 2, 1859, the great Carrington geomagnetic storm disrupted telegraphs and produced extraordinary auroras after a solar flare observed the day before.

Richard Carrington's 1859 drawing of the sunspot group associated with the Carrington solar storm
Richard Carrington's drawing of the sunspot group associated with the solar eruption of September 1, 1859. Public-domain historical scientific drawing.
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