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COURTESY UNIVERSITY OF HAWAII A composite photo, above, of the March 20 total eclipse as viewed from above the Arctic Circle was pieced together from 29 separate images. The moon covers all of the sun except some flares along the rim and the sun’s outer atmosphere, or corona. The corona’s streamers and plumes change from eclipse to eclipse, according to NASA. But they change very little, if at all, during the few minutes of totality. This research effort was led by astronomer Shadia Habbal of the University of Hawaii.