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And likely, at least with the technology we have right now, never will. And it's far too weak to filter out across the void of space. So to substitute, scientists use a laboratory equivalent, putting together black hole analogs from flowing water and ultra-cooled atoms. The other problem with black holes and their analogs is that what happens beyond it, a red horizon, is that here that under normal circumstances, nothing can escape. The horizon is a region where things are swept up in a current, moving close to that of the speed of light, or even at the speed of light. For the experiment, scientists shot an intense ultra-short pulse into a full-tonic crystal fiber, which allowed researchers to fine-tune how the light moved through it. And as the pulse moved, it slightly changed how the glass bent the light and produced a moving speed bump. That's a bet along with it.