View Full Version : Prelude to an X-Class Solar Flare

2012-Jul-17, 12:50 AM
Caption: Shimmering coronal loops from Active Region 1515 on the limb of the Sun before it rotates out of view on July 12, 2012. Credit: NASA/SDO/Goddard Spaceflight Center What takes place on the Sun before it unleashes a huge solar flare? Itís a thing of beauty, and observations from the Solar Dynamics Observatory are helping [...]

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