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IRIS captured this image of the X-class flare
March 29 X-class Flare - 11

NASA's Interface Region Imaging Spectrograph, or IRIS, captured this image of the X-class flare. This is the first X-class flare that IRIS has ever observed, as the telescope's pointing must be programmed in at least a day in advance – too far ahead to know exactly where or when a flare might occur. With these observations, IRIS provided the first comprehensive data set of how heat and energy move through the low layers of the sun's atmosphere during an X-class flare. Credit: NASA/IRIS

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Page Last Updated: May 7th, 2014
Page Editor: Holly Zell