User blog comment:Garhdo/Mass Effect: Andromeda/@comment-1679409-20150620164345/@comment-11209678-20150621200152

I have two theories on that. One is that they're using some kind of wormhole or similar phenomena to get to the Andromeda Galaxy. The other is that it is some type of system on the ship which allows fast travel. I would guess that this type of travel can only be used over extremely long distances because if you could use it for short hops it would greatly change the ME universe and, in my opinion, make it less interesting.