jamiestem Posted April 11, 2011 Share Posted April 11, 2011 Why has there been so much activity with the sun as of lately, I live in Pennsylvania and I saw the Northern Lights earlier this year in February following one of these Coronal Mass Ejections On April 9th a fireball the size of Jupiter shot out of the sun, I have heard these are some of the most extreme mass ejections in recorded sun history? Link to comment Share on other sites More sharing options...
swansont Posted April 11, 2011 Share Posted April 11, 2011 I'll repeat my previous answer to this: That history would be what fraction of the age of the sun — less than a part in 10^7, right? Five millipercent or so? Near solar maxima the Sun produces about 3 CMEs every day, whereas near solar minima there is about 1 CME every 5 days. http://en.wikipedia.org/wiki/Coronal_mass_ejection ! Moderator Note Question on corona temperature moved http://www.scienceforums.net/topic/56445-corona-temperature/ Link to comment Share on other sites More sharing options...
jamiestem Posted April 13, 2011 Author Share Posted April 13, 2011 So it hasn't been more active as of late? Or has it? I have a full understanding of our limited research on the sun given the span of a stars lifetime as compared to a humans lifetime. Link to comment Share on other sites More sharing options...
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