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NASA / SDO / SCIENCE PHOTO LIBRARY NASA / SDO / SCIENCE PHOTO LIBRARY
Solar flare, Solar Dynamics Observatory (SDO) ultraviolet image. The solar flare is the bright flash at upper right, with a burst of solar material erupting into space at lower right. The SDO is an Earth-orbiting spacecraft launched in 2010 by NASA and used to observe the Sun. Here, the Sun and its atmosphere (not seen in visible light) is seen in a view that combines ultraviolet wavelengths of 131, 171 and 304 angstroms, obtained with the Atmospheric Imaging Assembly (AIA) sensor. This flare occurred on 2 October 2014. It was classified as an M7.3 flare. M-class flares are one-tenth as powerful as the most powerful flares, which are designated X-class flares. For the full-disk view, see image C045/6033.
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