Grumpy Old Geeks Topics Black holes Topic Black holes 3 mentions in 1 episode The hosts discuss a reported observation involving a black hole’s corona and a pulse of X-ray energy. Mentions 157: U.S.S. Irony Apr 22, 2016 45:29 So we all know the concept of the black hole. 45:47 NASA has finally saw something come out of a black hole. 46:11 Then a massive pulse of x-ray energy spewed out after that.