Check out von neumann automatons. The idea is that once you started colonizing, you'd cover the entire galaxy in ~a million years, aka very quickly on a galacti

Check out von neumann automatons. The idea is that once you started colonizing, you'd cover the entire galaxy in ~a million years, aka very quickly on a galactic timescale. https://en.m.wikipedia.org/wiki/Self-replicating_spacecraft https://en.m.wikipedia.org/wiki/Self-replicating_spacecraft