You can pick from any sci-fi series/program, movie etc. Just bear in mind it's the world/universe you are looking at, not the quality of the show or it's writing. Some shows are awful, but the setting/world or future/past they are based on is actually something that's really exciting.
no, they're certainly not all the same, if you watch any series you would know what I mean.
So popular options include
The Expanse
Altered Carbon
Farscape
Bablyon 5
Andromeda
Star Wars
The 5th Element
Lost in Space
Star Trek
Dune
Riddick
Guardians of the Galaxy
Warhammer 40k
Dark Matter
Killjoys
Orville
Battlestar Galactica
Thor
Okay, I could go on, there are so many, take your pick. Don't forget ot say why, what you like about it.