Series of Multiple X-class Solar Flare Eruptions (20141019) HD




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Published on Jul 17, 2015

Between October 19 and October 27, 2014, a particularly large active region on the Sun dispatched many intense x-ray flares. This region, labeled by NOAA as Active Region (AR) number 12192 (or, simply, NOAA AR 12192, and shortened as AR 2192), is the largest in 24 years (at that point in Solar Cycle 24).

The following video segments track this sunspot region during this period (Oct. 19 – Oct.27, 2014), during which we can see the intense explosions. There are five X-class flares during this time, and NASA's Solar Dynamics Observatory (SDO), which watches the sun constantly, captured these images of the event.

Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.

When referring to these intense solar eruptions, the letter part of the classification, ‘X’, means, ‘X-class’. This denotes the most intense flares, while the number, after the classification letter, provides more information about its strength. For example, an X2 is twice as intense as an X1, an X3 is three times as intense, and so forth.

Solar Images Credit: NASA's Goddard Space Flight Center & SDO

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-- Tomas, Amateur radio guy and space weather guru; NW7US
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Video copyright, 2015, by Tomas Hood / NW7US. All rights reserved.


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