Any way to change my final goal? (Spoilers)

So I got to Atlas again, and discovered that it would be destroyed. After a lot of stuff, I got to decide what I wanted to do while the universe lasted. I chose go to the center of the universe to find Atlas. After reading what this does however, I dont really want to go to a new universe, I like this one fine. I'd wrather "Explore the Galaxy" which is the whole point of the game anyway. I'm kind of over the story now, it seems to have no end. Anyway, my question is: A. Can I change my final goal? and B. will having the wrong one change anything for my gameplay? Thnx!