X-class solar flare, October 25, 2013
The image is composed of an RGB stack of images taken through filters with wavelengths of 211, 193, and 131 nanometers. A fourth image, taken through a 304-nanometer filter, was dropped on top as a transparent overlay to add the granular texture of the solar photosphere.
Original image data dated on or about October 25, 2013.
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