Perkil8r Posted June 4, 2013 Share Posted June 4, 2013 http://sdo.gsfc.nasa.gov/gallery/potw/item/413 An extensive coronal hole rotated towards Earth over several days this week (May 28-31, 2013). The massive coronal area is one of the largest we have seen in a year or more. Coronal holes are the source of strong solar wind gusts that carry solar particles out to our magnetosphere and beyond. They appear darker in extreme ultraviolet light images (here, a combination of three wavelengths of UV light) because there is just less matter at the temperatures we are observing in. Solar wind streams take 2-3 days to travel from the Sun to Earth, and the coronal holes in which they originate are more likely to affect Earth after they have rotated more than halfway around the visible hemisphere of the Sun, which is the case here. They may generate some aurora here on Earth. >http://www.youtube.com/watch?feature=player_embedded&v=YfdzYhV5bOs Nice for increased Aurora spotting possibilities. Link to comment Share on other sites More sharing options...
BAZ Posted June 4, 2013 Share Posted June 4, 2013 Blimey, it's massive. Look North on Friday night then! Link to comment Share on other sites More sharing options...
Perkil8r Posted June 4, 2013 Author Share Posted June 4, 2013 It is a bit on the big side I grant you that! Link to comment Share on other sites More sharing options...
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