Fiery_penguin_of_doom wrote...
thekorolev wrote...
According to what? What Law states that there is an end. The concept of infinity is that there is no end, it just continues on forever. Sorry if I sounded derogatory, I was just trying to provide a counter-thought.
First you have to remember that infinity is a concept. Also, infinity cannot either exist in all circumstances, or not exist in all circumstances.
Anyways, logic dictates that for there to be a beginning, there has to be an end. The universe can't be infinite because the universe had to begin somewhere (big bang, big crunch). A theory of infinite universes exist when you put the big bang and big crunch theories together to get an oscillatory universe. Since technically all matter is drawn back to a single point to undergo a big bang.
While logic as we understand it does dictate that there is an end after a beginning, who's to say there is a real end when dealing with oscillating universes? The concept (Big Bounce) is just a cycle of universe birth (Big Bang), death (Big Crunch), and rebirth (Big Bang). The oscillating universe theory is just one of many, it hinges on what astronomical concepts you adhere to.
All matter being drawn back to a singe point is also one of many concepts. There exist others, such as heat death, that states that the universe will reach a point of maximum entropy where everything is evenly distributed, which would result in no life but the continuance of the universe itself. All of this is hypothetical, its impossible for us at this point to truly know what is happening.
Getting back to the tenth dimension, it could turn out to be the last as could be the eleventh, or the twelfth. String Theory allows for extra dimensions. Just because everything we know is contained in ten dimensions doesn't mean that that is all there is.
When dealing with theoretical physics, certainties are rare and theories and concepts get changed all the time.