A solar illusion: Coronal loops may not be what they seem:
https://www.sciencedaily.com/releases/2022/03/220302092742.htm
<quote from that link's Summary>
Many coronal loops -- ropey strands of plasma that scientists have long thought existed in the sun's atmosphere --
may actually be optical illusions,
according to a new paper that challenges prevailing assumptions of what we know, and don't know, about the sun.
<end quote>
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