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No sunspots
alan
post Dec 29 2007, 09:08 PM
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Something you don't see very often: no sunspots
http://umbra.nascom.nasa.gov/images/latest_mdi_igram.gif
most recent sunspot was seen on the 19th
http://www.nwra-az.com/spawx/comp.html
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Hofi
post Oct 2 2009, 12:24 PM
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Hi!

It seems as the new cycle has just began.
If you have a look at this image from Wikipedia you will see that it is a bit late.


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dilo
post Oct 2 2009, 03:45 PM
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Hofi, I think the updated image you should link is this one, really showing hints of the new solar cycle:
http://solarscience.msfc.nasa.gov/images/bfly.gif
Indeed, it seems we are returning to less strong activity pattern we had about 1 century ago...


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tanjent
post Oct 5 2009, 08:43 PM
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Dilo, maybe the astronomers of today can see more of the smaller spots than those of 100+ years ago?
I know the Wikipedia chart is based on the area covered, not the number of spots, but surely there
were a lot more unobserved spots back then, and this must account for some of that (until-recently)
steady increase.
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