10) Gathering Galaxies
The suns that had formed by this time started to find each other through gravity, and formed clusters and communities that were the first galaxies. It may be that at the centre of each of these gatherings was a black hole, as there are gigantic black holes that can now be found at the centre of almost all galaxies, like an axis point.
Different galaxies developed in their own particular way, which resulted in all kinds of shapes and sizes. They are fluid and dynamic entities. They travel around each other, sometimes exchanging gas and dust, sometimes spectacularly colliding and creating new stars and black holes in the process. Large galaxies swallow smaller galaxies, isolated galaxies die off quietly, whereas clusters of medium-sized galaxies will support each other with a mutually beneficial system of trade and exchange.
However, it was not until the third generation of Suns were being born that planets, and life, could have a chance to emerge within these systems.