#solarradiation
Science & Technology | Science
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.
News | News
Happening Now: Largest Solar Storm In Two Decades Pounding Earth
"The last time S4 levels were observed was in October, 2003."
