Some background: I am a senior in high school taking astronomy, so admittedly i do not know much about the structure and physics of the universe. However this is something that ive come up with on my own. I spend a lot of time just thinking about the universe, and this is one thing that just came to me a few days ago. No other explanation for it really. Is there any sense in my path of thinking and the connections i make? Are there some things that i am misunderstanding? Any types of opinions are appreciated. To begin, something i learned in class and from reading; The most popular model of the expansion of the universe is a balloon being blown up. The surface of the balloon is our 3 dimensional world being projected onto the 2 dimensional surface. We cannot leave the surface of this balloon. As the balloon expands, our world expands in all directions at the same time. This is why there is said to be no center of the universe, since the surface of the balloon is round there is no middle point, no point of origin. This i believe i understand, but im not really 100% on it. The big bang happened and our universe is inexplicably expanding/accelerating in all directions. Great, but theres something missing about the balloon model. I begin to wonder, what does the interior of the balloon represent? I will return to answer this question. I’ve read before somewhere that time is considered a dimension in itself. However time as a dimension behaves differently from the other three dimensions that we live in. Time, for some reason, is that only dimension that we can only travel forwards through, and cannot change our position or go back on. All other dimensions can be altered, but time seems to be this overseeing unchanging rule. It is relative to each point in the universe, and seems to be unstoppably ever-changing. So the conclusion i came upon is what if there is a connection between time and that internal dimension of the balloon? What if the expansion of the universe is what is causing us to perceive time itself? What if the same reason we cant go back in time is why the universe continues to accelerate? The interior of the balloon is the dimension of time, the same way that time is relative to every point in the universe, the universe is expanding at every point simultaneously, the expansion of the universe and the passage of time itself are one and the same thing. Or maybe im just thinking too much. Where can i find more information about the topic? What do you geniuses think? Where did i go wrong? :P Thanks for your time and for reading.