Chapter 1059: Those Born in Darkness
"The creatures from The Abyss are located in the region where the dead galaxies lie..." Hela gestured with her hands, and a representation of a galaxy being destroyed was shown.
This representation showed the processes by which a galaxy was destroyed. When a galaxy meets its end, the destruction caused can leave behind many stars, especially those located at its core. Many of these stars may explode as supernovas, scattering heavy material across space and possibly creating a new beginning.
In other cases, the core of the galaxy, often a supermassive black hole, can be exposed and continue to influence the environment around it, attracting matter and emitting intense radiation.
In this specific case, when a galaxy reached its true 'End', all that was left were dark environments centered around supermassive black holes that may or may not be active.