Science solar coronal mass ejection

Published on September 30th, 2012 | by James Ayre

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Solar Storm, Sun Unleashes Huge CME

September 30th, 2012 by




 
A very large Earth-directed coronal mass ejection (CME) erupted from the Sun on September 27th, 2012 at 10:25 p.m. EDT.

CMEs are solar eruptions that send billions of tons of solar particles into space, that then make their way to the Earth in one to three days if the blast was directed that way. This can potentially cause problems for electronic systems in satellites and on the ground.

New experimental research models that NASA is working on estimate that the CME is moving at around 700 miles per second and will hit the Earth on September 29th.


 
“CMEs of these speeds are usually benign. In the past, similar CMEs have caused auroras near the poles but have not caused disruption to electrical systems or significantly interfered with GPS or satellite-based communications systems,” a NASA news release stated.

“The CME is associated with a fairly small solar flare that was measured as C-class, which is third in strength after X- and M-class flares. The flare peaked at 7 p.m. EDT and came from an active region on the sun labeled AR 1577.”

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Some background on CME’s:

“The outer solar atmosphere, the corona, is structured by strong magnetic fields. Where these fields are closed, often above sunspot groups, the confined solar atmosphere can suddenly and violently release bubbles of gas and magnetic fields called coronal mass ejections. A large CME can contain a billion tons of matter that can be accelerated to several million miles per hour in a spectacular explosion. Solar material streams out through the interplanetary medium, impacting any planet or spacecraft in its path. CMEs are sometimes associated with flares but can occur independently.”

Source: NASA
Image Credits: SOHO/ESA and NASA

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About the Author

's background is predominantly in geopolitics and history, but he has an obsessive interest in pretty much everything. After an early life spent in the Imperial Free City of Dortmund, James followed the river Ruhr to Cofbuokheim, where he attended the University of Astnide. And where he also briefly considered entering the coal mining business. He currently writes for a living, on a broad variety of subjects, ranging from science, to politics, to military history, to renewable energy. You can follow his work on Google+.



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