Very cool videos!
Although a warning, you won't be able to edit this post after a few days due the forum so if you plan on making more you might have to make another thread.
EDIT: Nevermind, disregard what I have said, this issue has been fixed now.
What I find amazing about Space Engine, is not that it creates a procedural universe. But that it creates the same universe repeatedly.
Indeed, it's one of the main reasons why it's so amazing.
I have no idea how it works, but that alone is very impressive.
It works by having the generator follow a very specific "rule" or "seed" to generate, this produces the same result every time.