An experimental setup mimics a “black hole bomb” first theorized in 1971. Related Story Black Hole Radiation May Have Shaped Our UniverseA black hole bomb is not a true black hole, obviously, but it is heavily inspired by the massive gravity wells. Unlike a space superstructure, a black hole bomb might be a graspable human size. Furthermore, it also shows how this unstable regime can be switched on and off as predicted for the black hole bomb.”In other words, this setup realizes—almost exactly—what the “golden age” black hole pioneers of the 1960s and 1970s were theorizing. The rest of the way toward a true black hole bomb, the team concluded, is a matter of when, not if.