The Cosmic Web of Dark Matter

Mark O'Mara: We have our loose dark matter halo and practically speaking, it's more complicated than just loose dark matter. All of this could in theory be analyzed through gravitational lensing. He says if there were no lensing, then there would be little correlation beyond the very short scales where things evolved from the same events. "If you have a very clumpy universe, you'll see kind of spikes in the correlation function"