TYWKIWDBI ("Tai-Wiki-Widbee")
"Things You Wouldn't Know If We Didn't Blog Intermittently."
14 October 2014
This auroral "corona" is an optical illusion
The aurora is real, but the illusion that the rays converge is an illusion, as demonstrated
here
.
Photo credit Harald Albrigtsen, via
APOD
.
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