Thursday, September 03, 2015

Geomagnetic Mega-Storm Fries Telegraph Lines – 156 Years Ago Today

Geomagnetic Mega-Storm Fries Telegraph Lines – 156 Years Ago Today


     On Sept. 2nd, a billion-ton coronal mass ejection (CME) slammed into Earth's magnetic field. Campers in the Rocky Mountains woke up in the middle of the night, thinking that the glow they saw was sunrise. No, it was the Northern Lights. People in Cuba read their morning paper by the red illumination of aurora borealis. Earth was peppered by particles so energetic, they altered the chemistry of polar ice.

Hard to believe? It really happened--exactly 156 years ago. This map shows where auroras were sighted in the early hours of Sept. 2, 1859:

Map of Auroras Sighted in Morning – Sept. 2, 1859

As the day unfolded, the gathering storm electrified telegraph lines, shocking technicians and setting their telegraph papers on fire. The "Victorian Internet" was knocked offline. Magnetometers around the world recorded strong disturbances in the planetary magnetic field for more than a week. [...]

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