Solar Storm

Magnetic field data from the Sun over the last 24 hours.

Pretty stark..

Solar Flares

Nasa has a 3 minute video explaining them very well. Sorry, no embed option..

http://www.nasa.gov/mission_pages/sunearth/news/X-class-flares.html
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The Sun To Ruin GPS

"Turn left in 100 feet. Oh, wait, turn right in 50 feet...no no, go straight!"

This could play hell with the Military too. Those bombs don't hit their targets because we aim them so well.

http://news.bbc.co.uk/2/hi/science/nature/8494225.stm