Wanders of the Universe

Recently, I've been thinking that space has to have some sort of end or beginning. I believe in Heaven and hell, and I also believe that it doesn't exist in this universe. Meaning, you can't find it if you were to search forever in space. So that's where different dimensions come in. That's why I believe that we can't see an end to the univese because we are only capable of seeing at a maximum level a 3-D world.