2009’s Sleepy Sun Finally Woke Up In December

From Wired Science:

2009 will go down as the sun’s third quietest year on record, under-shone only by 1913 and 2008.

Two hundred-sixty of the year’s 365 days (71 percent) were sunspotless. Last year saw 266 sunspotless days, while the sun had no spots on 311 of the days in 1913. It was only a very active December that kept 2009 from falling below last year’s mark.

Sunspot activity waxes and wanes in a roughly 11-year cycle, so hitting solar minima isn’t surprising. But what the numbers underscore is that we spent much of the year still in the midst of the deepest, longest solar minimum in a long time.

Read more ....