Grumpy Old Geeks Topics Black hole merger Topic Black hole merger 2 mentions in 1 episode An observed collision of black holes discussed for its mass, distance, and the sizes of the objects involved. Mentions 469: Assed Vigilantes Sep 5, 2020 1:03:44 we've also found a third class of black hole 1:04:08 the black hole merger originated in two black holes of a size that had never been observed before