Re: Huh?
To paraphrase the Pub Landlord I'm of the opinion that:
Set - Science Fiction. Subset - Space Opera. Do you want me to draw you a...Venn diagram? :)
And, are you aware that Larry Niven wrote an episode of the Star Trek animated series?
https://www.youtube.com/watch?v=Ctt8uF3KQZ0
Enjoy!