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Contact: Christine Pulliam
cpulliam@cfa.harvard.edu
617-495-7463
Harvard-Smithsonian Center for Astrophysics

Coronal Loops on the Sun

Caption: This photo of the sun's edge, taken with the Solar Dynamics Observatory Atmospheric Imaging Assembly, shows coronal loops in a variety of sizes. Although the loops appear to have a constant width, like strands of rope, new work suggests that this is an optical illusion. The loops are actually tapered, wider at the top and narrower at the bottom.

Credit: NASA/SDO

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Related news release: Sun's loops are displaying an optical illusion


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