system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Is there ever any discussion about other galaxies throughout the universe?

I've watched all the Star Wars movies numerous times throughout my life and I've read up on a lot of the lore, so I would say I'm kind of an intermediate Star Wars fan.  However, it only just dawned on me as I was playing Mass Effect Andromeda that Star Wars all takes place within the same galaxy, rather than across multiple galaxies.  That blew my mind a little bit.

So, my question is, is there anything (either in the EU or cannon) about aliens from other galaxies, or just anything about other galaxies at all?  Can Force users sense life from other galaxies?
gpt
In legends, there is a massive invasion by the Yuuzhan Vong, pain-worshiping aliens from another galaxy. This was a huge part of the legends continuity- the empire was built to prepare for their invasion, and their attack dominated the post-empire continuity.

However, in Canon, they appear to be gone, and Palpatine's motivations are very different. Apart from the technicality of the Rishi Maze, a dwarf galaxy just outside the main one, in Legends there seems nothing of interest outside the galaxy.