system
Given the following post, respond as if you're commenting on Reddit:
human
If entropy always increases, how did a uniform hot universe filled with spread out particles turn into stars and galaxies? 

When i think about it, it seems that in the start there was hot mass all over the place in a uniform hot universe, but then it cooled and things started to form. It seems like going form less order to more order.
gpt
Increase of entropy is a statistical property, not an ironclad law saying "less order!". In particular, forces like gravity can appear to counteract increasing entropy. The early Universe wasn't completely uniform - it had tiny bumps, seeded by quantum fluctations just after the Big Bang, and those variations in density naturally collapsed under gravity to form structures like galaxies.