Clusters of galaxies (about a million, million times the mass of our sun), are typically made up of hundreds of galaxies bound together by gravity.

Take a look at the Substructure announcement trailer for this upcoming factory and automation game from the creator of UltraCube (a Factorio mod). Substructure will be available in PC Early ...

Hubble Space Telescope data, analyzed by a Yale astronomer using gravitational lensing techniques, has generated a spatial map demonstrating the clumped substructure of dark matter inside clusters of ...