Emerging sunspot releases mid-level solar flareAugust 20th, 2012 By Karen C. Fox in Astronomy & Space / Space Exploration
NASA’s Solar Dynamics Observatory (SDO) captured this image of an M-class flare on August 17, 2012, at 9:01 PM EDT. The flare, seen on the left (or east) side of the sun from an active region that has not yet been named, and is just rotating into view. The image is colorized in teal, which is typical for showing light in the 131 Angstrom wavelength -- a wavelength particularly good for viewing solar flares. Credit: NASA/SDO
(Phys.org) -- On August 17, the sun emitted a mid-level flare, peaking at 9:02 PM EDT. Solar flares are gigantic bursts of radiation that cannot pass through Earth's atmosphere to harm humans on the ground, however when strong enough they can disrupt GPS and communications signals.
What is a solar flare?
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"Emerging sunspot releases mid-level solar flare." August 20th, 2012. http://phys.org/news/2012-08-emerging-sunspot-mid-level-solar-flare.html