A solar wind stream is buffeting Earth's magnetic field, causing minor geomagnetic storms around the poles. High-latitude sky watchers should be alert for auroras.
"I am happy to announce the opening of Aurora Season in Iceland!" says photographer Iurie Belegurschi who snapped this picture on August 5th:
For the first time in months, Northern Lights are penetrating the twilight glow around the Arctic Circle. It's a sign that summer is tilting toward autumn. Says Belegurschi, "everyone is welcome!"
More green could appear among the blue on August 5-6. NOAA forecasters estimate a 50% chance of polar geomagnetic storms as the solar wind continues to blow.
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