Beyond the Universe

I think it's impossible. Going outside our planet is hard enough how much more if the people go outside the universe.(Don't forget the galaxy we are in.) Even though we have the advancement of technology we cannot assure the safety of the astronauts. There are things that we humans can't control. Anyway I'm interested to know about the things that exist beyond the universe(if there's any.

Why would there have to be things beyond the universe? Not that I'm saying there aren't. Consider the idea that the end of the universe meets the beginning. For some reason, and even as a child, I have always seen the universe as finite. And outside of that finite is pure white that circles upon itself. Maybe we did emerge from a black hole. Maybe the white and the dark ying/yang, fell so powerful upon another that it created a breaking point, i.e., a black hole. Maybe someday we will know, and maybe we won't. But a better question would be, 'does it matter?'