Thanks to Astrococktail for this link to a NASA article on the Solar Minimum, the expected period of low sunspot activity. The Solar Minimum came right on schedule back in 2006, as I reported in this earlier article. But this Solar Minimum is setting all kinds of records. In 2008 the Sun was completely blank of sunspots 73% of the time, the lowest activity since 1913. As of March 31, according to the NASA article, the Sun has been free of sunspots... Read more