Peering through the Layers 
This collage of images shows an active region on the Sun taken at almost the same time in extreme ultraviolet light (July 24, 2014 at about 17:56 UT). The layers are arranged clockwise from the upper left by temperature of plasma being imaged. This arrangement also correlates with the distance above the Sun's surface, going from lowest to highest. Different features of the active region appear quite differently in the four images: each one helps to provide scientists with more information about the Sun's processes. Credit: Solar Dynamics Observatory/NASA.
Search Tag(s): 171, 304, 131, 193, active regions
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