Large sunspot group, SDO image

Large sunspot group, SDO image

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Caption: Large sunspot group, Solar Dynamics Observatory (SDO) image. Sunspots are pockets of cool, dark gas which occur in magnetically active regions of the Sun, often in groups. This region of sunspots produced several medium-sized, or M-class, flares. The SDO is an Earth-orbiting spacecraft launched in 2010 by NASA and used to observe the Sun. Image obtained on 26 August 2015, as a Quick-Look Continuum view from the HMI (Helioseismic and Magnetic Imager) instrument. HMI Continuum (Intensitygram) images show the solar surface in visible light (the photosphere). This is a flattened intensitygram.

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Keywords: 2015, 21st century, 26 august 2015, active, astronomical, astronomy, astrophysical, astrophysics, close-up, coloured, continuum, detail, flares, helioseismic and magnetic imager, hmi, intensitygram, large, m-class flares, magnetically active, no-one, nobody, optical, photosphere, physical, quick-look continuum, research, sdo, solar, solar activity, solar astronomy, solar dynamics observatory, solar physics, solar surface, solar system, space, space telescope, spherical, sun, sunspot, visible

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