THEORY OF INFINITY

[Niquie]

I can't wait for the replies. Seriously.....

[limey_defence]

When I did Physics in school the teacher always used to say none of it had a definate answer, so I think you're going to get the same response there.

Personally from what I figure it's just one infinate vacuum but the galaxies and star systems are moving out from the center. So more of the vacuum is covered with stars...that's what I think anyway...

[justin1987]

in answer to your question in the previous page, limey defence, to put it in very simple terms, velocities are vector quantities, and being so, they have a definite directon, and when i say perpendicular, i mean that their respective directions at a particular time t are perpendicular.

[limey_defence]

Simple, really..

[Faloaded]

Originally posted by Booger
I don't know if this question is relevant, but here goes:

If the universe is expanding, then what is it expanding "in"? Is there a big bowl of "stuff" that the universe sits in? Is there something beyond the edge of the universe? What's the gravy surrounding the hunk of meat we call the universe?

There is two main theories about this... the first one is that "space" between "masses" is expending... the second is that masses, because of their movement, the distances between them is growing. Both are not the same thing.(actualy they can be the same, according to few physicist)

What you must realise that an empty space has no boders, it is not a "stuff" in fact, and empty space alone might be just nothingless.

Think about it, the moment you observe this "empty space" it isn't anymore an empty space. Because for you to be able to observe it, it has to emit something(light, noise etc...), this empty space by this observation interact... if it has no interaction... it is nothingless... viewing it like this, you have to conclude that the universe is not expending "in" anything... the universe for us observers... is the "in" itself... you can see it as this.

If there really was an "in" in which the universe is expending, this "in" will as well be a part of the universe, and being so, the universe won't be expending even if we observe that the distances between "masses" is groing, or spaces between masses are increasing etc...

[Booger]

So when we think of the Edge of the universe - it would be the most distant piece of matter able to reflect or emit energy? And beyond that piece of matter, "nothingness" stretches for infinity?

[justin1987]

Look, the concept on the expansion of the universe is pretty tough. Even the scientists arent sure of it. Though I am a student of Applied Physics I do take active interest in Astro Physics and so, i can give you certain info about it. Firstly, there are these things termed dark energy and dark mass..... Dark energy's the tough part.
There is considerable proof of it to be energy, but still it doesnt satisfy the energy equations.... it's supposed to rip the universe apart...
Now dont you think that in that case the density would get feebler and feebler { talking about hte average density of the universe }.No,it doesnt. Can you tell why?