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Space.com on MSNAurora alert: Giant 'hole' in sun and strong geomagnetic storm converge to supercharge northern lights this weekendA huge sun eruption combines with speedy solar wind from a "coronal hole" for a weekend aurora show, experts predict.
The Sun periodically ejects huge bubbles of plasma from its surface that contain an intense magnetic field. These events are called coronal mass ejections, or CMEs. When two of these ejections collide ...
The sun periodically ejects huge bubbles of plasma from its surface that contain an intense magnetic field. These events are called coronal mass ejections, or CMEs.
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