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A comment on What Is a Blazar? It’s Like Staring Down the Barrel of a Black Hole.

Re:What Is a Blazar? It’s Like Staring Down the Barrel of a ... by dghughes on Friday July 13, 2018 @11:26PM (#17528639)
I'm just as amazed that a place like the IceCube Neutrino Observatory could be built.
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