Why do galaxies over time become more refined, ordered and defined instead of more random and disordered?
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Because of gravity. Gravity introduces the possibility of local order, while globally disorder may increase. See about galactic evolution, an example of local order, in an otherwise fairly random universe, at https://en.m.wikipedia.org/wiki/Galaxy_formation_and_evolution. It's all about structure formation.
Something similar is true on what allows the order we see in planets, and then the order inherent in life. Gravity forms Suns, which radiate heat, which provides low entropy heat for structures to form.
Bob Bee
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