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Aurora alert! Gigantic 500,000-mile 'hole' in the sun's atmosphere could spark impressive northern lights tonight and tomorrow (photo)
Coronal holes are areas where the sun’s magnetic field opens up, allowing solar wind to flow freely into space, according to ...
Enormous hole measuring 500,000 miles opens up on the Sun
A gigantic hole has opened up in the Sun's atmosphere and is currently big enough to spot from Earth. The structure located ...