NASA's David Hathaway has adjusted his expectations of Solar Cycle 24 downwards. He is quoted in the New York Times here Specifically, he said: " Still, something like the Dalton Minimum - two solar ...

Sunspots are one way we can track the activity of the Sun. There have been fewer sunspots than usual in recent years, and that may point toward an historic solar minimum. Sunspots are dark patches ...