Distant supercluster El Gordo suggests presence of self-interacting dark matter

A supercluster of galaxies named El Gordo, located seven billion light-years from Earth, is unusually large for its time period in the universe. The cluster, consisting of two colliding regions with a combined mass exceeding two quadrillion solar masses, provides new insights that point to the role of self-interacting dark matter in its formation.

Originally published by gnews