Scientists say the storm, driven by heightened solar activity, could cause temporary effects on technology and communications on Earth.
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Officials said geomagnetic activity is likely to increase with the arrival of an Earth-directed coronal mass ejection.
NASA's Solar Dynamics Observatory captured images of the event on the Sun.
The US government's scientific weather forecasting agency said a powerful geomagnetic solar storm reached dangerous levels.
DURHAM — The University of New Hampshire was awarded $24.3 million by NASA, on behalf of the National Oceanic and Atmospheric Administration, …
CONWAY — People in the Mount Washington Valley were treated to a fabulous light show as the aurora lit up the night sky for all to see.