Sunspots

1. Features to look for in White Light pdf [photo credit: J. Stetson]
2. Sunspot Detail jpg | more information
3. Sunspot Size jpg | more information
4. Sunspot Strengthening jpg | more information

Effect of Geomagnetic storms on power grids

1. Flaring Up | How a solar storm can knock the lights out pdf [Credit: The Wall Street Journal/NASA]
2. Power Grid failure in 1989 pdf | The Day the Sun Brought Darkness

The Sun's Activity

1. What to look for on the sun pdf [photo credit: David Evans]
2. Layers of the sun jpg

• Flares Spanish pdf
• Prominences and Filaments Spanish pdf
• Sunspots and Plages Spanish pdf
• What will I see on the Sun today? Spanish pdf

Explore the Sun

• A set of 15 Q & A cards from NASA to download and print.
  Tip: We added a loop to each card and thread them on the bottom rail of our display--ensuring that they do not blow away. Print a second "What might you see on the sun today?," put it in a plastic sleeve, and hang on your telescope.
• Explore the Sun: Activity video
• NASA- SUNSTRUCK Teacher Resources: an integated solar educational experience.