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Fraser
2007-Apr-02, 06:15 AM
It's Spring in the Northern Hemisphere, and that means the Sun is back. But it's more than just a free heat lamp for your garden, it's an incredible, dynamic nuclear reaction complete with flares, coronal mass ejections, twisting magnetic fields and the solar wind. ...

Read the full blog entry (http://www.universetoday.com/2007/04/02/podcast-the-sun-spots-and-all/)

George
2007-Apr-02, 06:22 PM
Very nice presentation.

I thought you might be wrong on the random walk of 10 million years, but you seem to be correct based on this 2006 paper (http://www.wooster.edu/physics/JrIS/Files/Walker_Web_article.pdf) (Lisa Walker).

Interestingly, in the paper's conclusion, the walk time using a constant density model yields ~ 50,000 years, whereas a linear density model produces a 2.9 million year walk.

Obviously, I am pleased you reserved the heliochromological issues for a special show. :razz: Surely, this issue is also one of the big solar mysteries. Admittedly, there is some merit in understanding what happens when the sun ejects 10 billion tons of scorching plasma directly at our planet, but its color should be a close second in top priorities. ;)

Nick4
2007-Jun-07, 04:13 AM
Maybe we can get some northern lights