Active Region 1302 Unleashes an X1.9-category Solar Flare (VIDEO)

NASA/Goddard Space Flight Center

Caption

Active Region 1302 unleashes an X1.9-category solar flare at 5:40 am EDT on Sept. 24, 2011. NASA's Solar Dynamics Observatory (SDO) recorded the extreme ultraviolet flash in composite wavelengths (211, 193, 171 angstrom). Note: The sun has been rotated 90 degrees clock-wise for better video presentation.

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NASA/SDO/GOES

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