On July 28, 2012, the sun emitted a mid-level flare, categorized as an M6.2 flare. The flare is visible here in the lower left-hand side, coming from an active region on the sun named AR 1532. This image was captured by NASA’s Solar Dynamics Observatory (SDO) in the 131 Angstrom wavelength, which is typically colorized in teal and which is a particularly good wavelength for observing flares.
Credit: NASA/SDO› Link to associated news item