I would just focus on traveling space to meet aliens in your dreams for now, galaxy traveling is impossible, as of my current understanding. We would first have to be able to travel at lightspeed, even then the spaceship would probably expand and then eventually explode. Even if we found a way to travel lightspeed without getting our atoms expanded lol, it would still take what, 500 lightyears? We would have to reproduce on the spaceship farming, growing some type of fuel to fuel our lightspeed trip, some type of sanetery water supply, teach the children all they need to know, plus have them agree and cooperate. Not even that, some galaxies are lik 500million lightyears away! O_O Your right, the Universe is big, too big to travel for us. We are lucky if we can get to Mars.
As for loopholes in space, they exist. However going into one, you could very well end up anywhere in space or time. God only knows if you would even return back to your time on Earth, or if 1000 years has passed when you only left for what seemed 10 minutes. Not to even mention, the loophole would most likely close right back up after you exited to the other side, it may even trap you inside it ultimately killing you.
Another thing to worry about is black holes, comets, planets, all while rushing forward at lightspeed. Also you would need to make sure you had some type of gravity machine so that everyone wouldn’t fly out the windshield going that fast.
Lastly, we need the funds to support such a meaningless venture. Also we need some loon to volunteer basically his life in space, never to return home, willing also to reproduce with another lady astronaut. How would we keep communication? Once they got to another galaxy, what then? Our astronauts die off, unless (God forbid) they mate with cringe aliens… Even if we find life. Good luck with all that. xD
If we even do travel farther than the end of our solar system, it will be a long long way off. Anyone dreaming this should stop lol. Like I said, maybe in your lucids.
I am no nerd by the way, I just watch a lot of “The Universe”, I love that show. =D