The sun emitted a mid-level solar flare on Dec. 4, 2014, an M6.1-class.
The sun emitted a mid-level solar flare on Dec. 4, 2014, an M6.1-class, seen as the flash of light in the lower right of this image from NASA’s Solar Dynamics Observatory. The image blends two wavelengths of extreme ultraviolet light – 131 and 171 Angstroms – which are typically colored in teal and gold, respectively.
Credit: NASA/SDO