Black Holes: Size Comparisons of the Largest Objects in the Known Universe
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May 1, 2017
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http://www.disclose.tv/action/viewvideo/232938/black_holes_size_comparisons_of_the_largest_objects_in_the_known_universe/
These comparisons will blow your mind. You think you understand space? OJ287 is one of the largest black holes in the known universe …