The “solar events” caused brief blackouts in high frequency communications when they struck, twice on Tuesday morning and once this morning, all between the hours of 7 a.m. and 9 a.m. EDT.Solar flares are bursts of radiation on the sun’s surface. The disturbance to Earth’s atmosphere can disrupt GPS and communications signals, according to NASA.
One of the flares created a “coronal mass ejection” that actually could come into contact with Earth on Friday, according to NOAA. The ejection is essentially a huge cloud of plasma that could hit the Earth and cause a shock wave, affecting communications systems. If an ejection were to hit Earth on Friday, scientists expect it would only cause a minor geo-magnetic storm, according to NOAA.
The flares were observed by NASA, which posted "stunning"* photos and videos of the events on its website."
*Parenthesis mine Ed.
Go to: http://abcnews.go.com/blogs/technology/2014/06/solar-flares-disrupt-communications-on-earth-could-send-shockwave-on-friday-the-13th/#.U5kw5Ko9kKc.facebook
Go to: "What's that coming Over the Hill?" http://gkhales.blogspot.co.uk/2012/06/whats-that-coming-over-hill.html
"Astrotometry" on YouTube; Go to: https://www.youtube.com/user/astrotometry