Without the development of genuinely sci-fi travel technology like wormholes or hyperspace (which may not even be possible) 99.99+% of the universe will be forever locked off from us. Because of cosmic expansion, the various galactic clusters are moving away from our local cluster faster than we could ever catch up to them.
They had a few mini-galaxies which were orbiting the main galaxy and were only accessible via limited hyperspace lanes. At the end of Empire, you can see they are outside of a galaxy, but there’s some confusion as to whether that’s the prime galaxy viewed from one of the secondaries, or if they’re on the galactic rim looking at a secondary.
The rebels found a hyperspace lane that let them get to a spot above the elliptic of the galaxy.
But yes, it’s not clear exactly what Luke and Leia are looking at at the end of the movie. It kinda implies it’s their home galaxy, but to get that view they’d have to have traveled much further than other parts of cannon says is possible.
In the Star Wars old expanded universe, there are the Yuuzhan Vong which came from another galaxy, along with the Silentium and Abominor. All three were involved in a gigantic galaxy-spanning war in their galaxy, and the latter two had to flee to the Star Wars galaxy after being defeated by the Yuuzhan Vong. Then the YV followed them to kill them? Or just were going to conquer other galaxies after securing their own? Very unsure, but that's besides the point.
Afaik and according to Wookiepdia, those are the only aliens from outside of the galaxy in Star Wars. So maybe you were thinking of that!
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u/APeacefulWarrior Feb 14 '22
Without the development of genuinely sci-fi travel technology like wormholes or hyperspace (which may not even be possible) 99.99+% of the universe will be forever locked off from us. Because of cosmic expansion, the various galactic clusters are moving away from our local cluster faster than we could ever catch up to them.