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Coronal Mass Ejections


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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?

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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.




Moderator Note

Question on corona temperature moved http://www.scienceforums.net/topic/56445-corona-temperature/

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