The Theory of a Flat Universe?

What is outside the universe ? your theory to this. I love to know. many universe perhaps ?

• Its interesting how humanity and experts and science imagine things and each person has thier own posibility imagination what lays out there in deep space... For me its like im living in the year 9000 where im looking back in 2011 and see how people think different senarios and such. I sort see that quite interesting but overhelm because theres too many posible solotions... there has to be just ONE solution fact and only ONE fact and only ONE REAL EVIDENCE of answer... So there are so many senarios of what people believe the univer started and whats out side the universe and then you hear other people saying a different story thoery about it.... But there has to be only one correct answer... the problem is.... we will never know the answer... becasue the universe is big then you can imagine. Not even 20thousand years time not even a million years time... we will never now the facts but we will have to make it up to make it sound realistic to the final book itself. Know my theory which may not be true or posible fact is that there could be a few different universe out there and its growing with a bigbang just like how a bubble pops out under deep sea instantly from the heat water volcano.. Oh tho my question there is.... whats laying between this catch of universe.. its almost like as if we are living inside a something body cells.. and that the cells are the universe and each cell inside it has galaxys.. seriously it just becoimes stranger and stranger.. tho i wonder if this is really real life or set up. your imaghination to explain us... What do you think there is outside the universe ? I know your going to be upsolutely WRONG just like me and just like the rest of the people on earth.. but its still a good imagination to share the idea with us.... Really though.. perhaps life itself is design not to know what lays outside the universe.... its like saying your cell is not aloud to escape outside of your brain.. because if it does... the scalp breaks and leaks and your dead.

• Answer:

  It is meaningless to ask the question of what is outside the universe. It is like asking what is south of the south pole. In otherwords, the universe by definition contains everything that exists. If you think you can draw its bounds, all you have to do is move one object beyond those bounds, and you will then need to redraw those bounds. You will never encounter an object that is outside the universe, no matter how you draw the bounds, and no matter where you move the existing matter.