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The Sun lets loose an M9 flare

On July 30, 2011 at 02:00 UTC a sunspot erupted on the Sun, giving off a brief but powerful class M9 flare. The first segment shows it at 33.5 nanometers, in the ultraviolet (colored blue for clarity). You can see the explosion in the middle of the three bright regions. The second segment shows it a bit farther into the UV (falsely colored orange). I have not heard of any effect on Earth from this flare, though we may get some aurorae from it in a day or two. More info: http://blogs.discovermagazine.com/badastronomy/2011/07/30/the-sun-lets-out-a-brief-flare/ Credit: NASA/SDO/Helioviewer.org
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