How the Sun Works

• Solar Tour and Structure of the Sun. From the YPOP Spotlight    http://www.lmsal.com/YPOP/Spotlight/
  A collection of informational "tours" of the sun  from the Yohkoh Mission Public Outreach Project.   
• Solar Flare Theory Page     http://hesperia.gsfc.nasa.gov/sftheory/index.htm
  From NASA's Goddard Space Flight Center.
• Measuring Solar Activity     http://www.lmsal.com/YPOP/Classroom/Lessons/Cycles/
  From the Yohkoh Mission Public Outreach Project.
• Sunspots and Solar Storms     http://image.gsfc.nasa.gov/poetry/sunspot/sunspot.html
  From NASA's IMAGE mission Public Outreach and Education page.
• Sunspots    http://cse.ssl.berkeley.edu/segwayed/lessons/sunspots/
  From the Science Education Gateway  (SEGway)

How High Energy Solar Activity Affects The Earth

• Space Weather Bureau     http://www.spaceweather.com/
  From NASA's Marshall Space Flight Center.
• Live From the Sun - (http://www.passporttoknowledge.com/sun/main.html)
• Auroras, Paintings in the Sky  http://www.exploratorium.edu/learning_studio/auroras/
  From the Exploratorium.