system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] How the Nine Realms stand in relation to the rest of the universe?

So, the Nine Realms are planets in the MCU, much like Xandar, Sakaar, among others. But why they are so far removed from the rest of the universe? They clearly know about and even interact with other beings either from outside the realms, or outside the realms (Thor: The Dark World, Thor: Ragnarok), but seeing the interstellar communities in both GotG, you don't see Asgardians, or even a reference about them.

Same deal with Asgard. Why they didn't help the Novas at Xandar? Why they don't have an alliance?
gpt
From the illustrations they gave us, they seem to be withing a single galactic supercluster.  Over all that space, the Asgardians are connected to and concerned with 9 worlds.  

Xandarian's aren't advanced enough to be let into their little norse tree club.