A Galaxy is a massive collection of stars bound by gravity, which orbit around a common center. No Man's Sky takes place in several galaxies. Players who reach the center of their current galaxy are then transferred to the next. This process is automatic, and currently irreversible. This progression is linear, and similar for every player. Apart from the color and size of those galaxies, there are no significant changes in gameplay at the moment. Interestingly, only the first five galaxies have a non-procedural name, chosen by the developers. The following ones are given a procedural name.