Sun Down: High-Energy Cosmic Rays Reach a Space Age Peak
Tuesday, October 6, 2009 - 06:07
in Astronomy & Space
It's been a slow two years for solar activity, with 2008 bringing the greatest number of blank, or sunspot-free, days in nearly 100 years . And now this year, albeit there are signs of stirring on the sun , is on pace to top 2008 as the sleepiest since 1913. [More]