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Beautiful aurora! What makes it happen?

25 Jan 2012, 20:06 UTC
Beautiful aurora! What makes it happen? Chad Blakely
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Clouds! They were with us last night, but according to Mike Thiele, who observed from northwestern Minnesota, the storm had spent itself by the time it was night along the U.S.-Canada border: “Very weak display partially obscured by clouds about … Continue reading →

An amazing aurora display in northern Sweden last night. Details: Nikon D7000 camera, Tokina 11-16 2.8, ISO 1600, 5 second exposure. Click the photo to see his fantastic video of the entire night. Credit: Chad Blakely
Clouds! They were with us last night, but according to Mike Thiele, who observed from northwestern Minnesota, the storm had spent itself by the time it was night along the U.S.-Canada border: “Very weak display partially obscured by clouds about 4 a.m.,” he writes.
Earlier, during afternoon hours North American time, auroras raged across northern Europe. Sky watchers there called it one the best in years. Chad Blakely, who participated in the Lights over Lapland photo expedition in Abisko National Park in Sweden called it one of the most spectacular displays of aurora he had ever seen. “Words can not describe the excitement we shared and the sights we saw,” said Blakely.
Magnetic fields on the sun channel solar plasma ...

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