CORONAL HOLE TURNS TOWARD EARTH: A large coronal hole is turning toward Earth, and it is spewing a stream of high-speed solar wind. NOAA forecasters expect the stream to reach our planet on Sept. 28-29 with a 50% chance of G1-class geomagnetic storms when it arrives. At this time of year, even a gentle gust of solar wind can spark bright polar auroras. The incoming stream is almost sure to provoke a nice display. Free: Aurora Alerts
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