Sunday 10 April 2011 photo 2/7
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AURORA WATCH: High latitude sky watchers should be alert for auroras. NOAA forecasters estimate a 40% chance of geomagnetic activity during the next 48 hours, when a solar wind stream is expected to buffet Earth's magnetic field. A coronal mass ejection detected by NASA's STEREO probes on April 9th could also reach Earth and contribute to the display on April 11th.
Annons
Directlink:
http://dayviews.com/butterflyskies/487928807/