About a year ago I embarked on creating a color scheme for a project and I loved it so much I began using it for everything. I decided to make an official repo for it to share with the world.
Anyhoo, hope y'all enjoy it.
I can't speak to anything else but personally, I love Japan style/aesthetic/whatever so I'm gonna use a word if it fits.
You can't sub universe in those. Yes, a dictionary may use that translation, but watch a space documentary and they won't use "uchu" by itself for "universe".
Also, in English, "universal" and "universe" are clearly related, but in Japanese, the concept of "universal" has almost nothing in common with "uchu"
If you go back 150 years, you're more likely to encounter 天地 where now you'd see 宇宙, while the former incidentally does invoke the spiritual or religious overtones that "universe" can have, albeit those are stronger in 天地 as a function of it being a tad archaic.
You might see 万物 or the lyrical 森羅万象 where English uses "universe" to mean "all things"; 世界 when talking about a person's universe/world; 領域 for delimiting a universe or domain of consideration; 全人類 in places where English is being poetic about humanity; or even 宇宙 in certain mathematical contexts.
Those are just off he top of my head, but I think you get the drift.