NASA / SDO / SCIENCE PHOTO LIBRARY NASA / SDO / SCIENCE PHOTO LIBRARY
X-2 class solar flare. Composite Solar Dynamics Observatory (SDO) image showing a X-2 class solar flare erupting from the surface of the Sun on 26th October 2014. This was the third X-class flare in 48 hours erupting from the largest active region, AR 12192, seen on the Sun in 24 years.
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