The whole thing about the galactic barrier makes no sense. There is no galactic barrier and why would there be? It's just an excuse for something sciency and for another near death event. If you want to leave the galaxy, you can do it. Everything gets less dense until you're finally out of the galaxy. Done deal.
shareOh for god's sake, stop watching this FAUX Star Trek, ILJ!! No-one gives a shit about Kurtzman's warped ideas!
The galactic barrier was installed by a supercivilization. Watch some Star Trek :D
https://memory-alpha.fandom.com/wiki/Galactic_barrier
Or use google.
You're definitely NOT a Star Trek fan! Peeples & Roddenberry wrote Where No Man Has Gone Before, the second pilot of TOS. https://www.imdb.com/title/tt0061027/
The flight recorder of the 200-year-old U.S.S. Valiant relays a tale of terror--a magnetic storm at the edge of the galaxy!
The funny thing is I probably saw that episode, but I don't remember. I like TOS, but cut me some slack. I can't rewatch all the old stuff when new stuff comes out every day. Thanks for the head's up about that episode.
shareThe Galactic Barrier appeared or is referenced several times in the original series. "Where No Man Has Gone Before", "Is There in Truth No Beauty", "By Any Other Name."
It seems to be a staple concept in Star Trek, though it is a bizarre concept. I suppose they felt they had to use it, though there are many ways it could be have been explained as "no longer there."