Before the X Flare: AR1520 and Coronal Loops (VIDEO)

NASA/Goddard Space Flight Center

Caption

This movie shows the sun from late July 8 to early July 10 shortly before it unleashed an X-class flare beginning at 12:11 PM EDT on July 12 as captured by the Solar Dynamics Observatory. The region responsible for the flare, Active Region 1520, sits in the lower left part of the sun. On the right side of the sun, the shimmering loops offer us the last vision of Active Region 1515.

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NASA/SDO/AIA

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