SOHO observations of the Sun's outer atmosphere (FeXII at 19.5nm)The level of solar activity goes through a cycle of maxima and minima with one cycle lasting roughly 11 years.
REBEL
Apr 15 2008, 01:33 PM
Awesome & Powerful.
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.