Universe?

I think one of the most beautiful things is a clear night, when you can see all the stars above. It is something marvelous and something we as a society know so little about. Science has its bounds for the moment, and I fear I will not find out the answers to my questions I have before I die. I wish to see or hear about the splendor of another planet, with intelligent life. Out of the TRILLIONS of stars in varying galaxies, it is hard to deny that possibility. In fact the universe itself is a mind boggling notion, if it will hit a maximum size the first question that pops into my head is what limits it or what holds the universe. I think if one thinks to long about it their head might hurt, but I think it is something important. If the human race as a whole manages to survive not blowing up one another, we are going to run out of space on our blue planet some day. To remedy that we will need to find somewhere to live. Hopefully if we make it there, we will have discovered a means to which we can travel great distances in little time. I dunno where I was going with this but it is something I thought about. Here is a good video to give you an idea of what an insignificant little speck of dust our planet is on the grander scale.
http://www.5min.com/Video/Overview-Of-The-Universe-1383218