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Re:What Is a Blazar? It’s Like Staring Down the Barrel of a ... by dyukqu on Friday July 13, 2018 @06:38PM (#17527479)
Here’s what telescopes actually capture: https://www.eso.org/public/videos/eso0846j/

(And here is a long thread about it from 4 months back if anyone is interested: https://news.ycombinator.com/item?id=16480142)

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