Earth hit by biggest 'solar radiation storm' in 23 years, triggering Northern Lights as far as Southern California
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Earth hit by biggest 'solar radiation storm' in 23 years, triggering Northern Lights as far as Southern California

Earth's magnetic field was struck by a "severe" solar storm yesterday (Jan. 19), triggering vibrant auroras in the U.S. and large parts of Europe. The storm broke a record that had stood for more than two decades.