posted on Jul, 18 2005 @ 09:24 AM
picture the universe like a ballon. Blow air into it, it expands.
Now I bet you are picturing a big round sphere shaped object right? wrong.
well the universe is not like that at all. look at the surface, and only the surface of the ballon. That is all the universe is. There is nothing
inside the ballon, the universe is only the rubbery bit of plastic curved around itself, and we are a little dot on it. Thats why its hard to imagine
what the universe expanded from.. because there is nothing inside it blowing it up, or what it looks like, the balon is only a very simplified
analogy. the surface area is expanding all by itself, and it is infinite in size. There is no centre, although any point could be though of as the
centre. And space is only expanding where matter is not as densely present, ie between clusters of galaxies. We are getting further apart faster and
faster (i just talked about hubbles constant in the other thread
) so the ballon is expanding, growing bigger.
But remember the key concept- the universe is only the surface area of the ballon and nothing else. Not the air inside it, not the air outside it.
they don't exist. So you could never see it from the outside, or learn its true shape from an observer's point of view.
now these are fun and great topics for discussion, but learning the theory behind all of these principles makes it more rewarding when one day you can
truly understand them yourself. so before you post anything, think about it first, and google for an answer. After all, here are just a bunch of
peoples opinions, learn the facts and truths for yourself. or better yet get an education in physics
edit: i only say it because these questions crop up a lot, and there's a lot of blatant misconceptions, wheres that resident physics wiz to answer
[edit on 18/7/05 by painkiller]