And scientists generally believe these wrinkles caused dark matter to clump together, eventually forming great cosmic blobs known as dark matter haloes. What’s the universe simulation for? The purpose of this universe simulation is to help scientists interpret the findings of Euclid. A universe simulation is never finishedAs new data from Euclid comes in, scientists will update the simulation’s parameters to closer resemble reality. Bottom line: Astronomers have unveiled the largest universe simulation ever created.