Tuesday April 28, 2009
The sun's cooling down - so what does that mean for us?
Laura Spinney
The Guardian
The sun's activity is winding down, triggering fevered debate among scientists about how low it will go, and what it means for Earth's climate.
Nasa recorded no sunspots on 266 days in 2008 - a level of inactivity not seen since 1913 - and 2009 looks set to be even quieter. Solar wind pressure is at a 50-year low and our local star is ever so slightly dimmer than it was 10 years ago.
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