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-Xiangu-
03-11-2007, 12:34 PM
whats your view on the multiverse theory?

i was speaking to my physics teacher the other day and he was saying how the universe is expanding and getting bigger and to do this it has to expand into a void where scientists beleive there are other universes expanding. and that the universe could end 3 ways...

1. Expand and gravity pulls it back in to something called "the big crunch"
2. Expand and gravity and the force expanding it become equal.
3. (i like this one) The universe keeps expanding and as everything moves further apart the universe has a sad cold death

your views

-:Undertaker:-
03-11-2007, 12:39 PM
I don't think it ends, I believe it just keeps going with no end.

-Xiangu-
03-11-2007, 12:45 PM
cool it is expanding though so there must be an end? or at least an area where you could get into the "void" so as its expanding how is there no end :P

sorry i just like questioning peoples views

-:Undertaker:-
03-11-2007, 03:10 PM
We don't know if it's expanding, just like we don't know for sure that Black Holes really exist.

-Xiangu-
03-11-2007, 04:36 PM
galaxies are moving further apart from each other and getting faster so that shows the universe is expanding as where would the galaxies go?

Frisky
03-11-2007, 04:44 PM
It's just scary thinking that the universe is creating itself and doing all sorts of crazy **** everyday :o

&
03-11-2007, 05:35 PM
what i find weird is

space goes on for ever.
and if it doesnt, whats on the other side.
its just horrible to think about lol

-Xiangu-
03-11-2007, 07:03 PM
what i find weird is

space goes on for ever.
and if it doesnt, whats on the other side.
its just horrible to think about lol

by space i think you mean the universe. and yes it could go on forever if gravity doesnt pull it back in. and there is evidence to show the universe is getting bigger because the galaxies around us are tinted red which means the light is being stretched meaning a red glow equalling moving in an oposite direction to us

edit:

Big bounce
According to some quantum loop gravity (http://en.wikipedia.org/wiki/Loop_quantum_gravity) theorists, the Big Bang (http://en.wikipedia.org/wiki/Big_Bang) was merely the beginning of a period of expansion that followed a period of contraction. In this oscillatory universe (http://en.wikipedia.org/wiki/Oscillatory_universe) hypothesis (originally attributable to John Wheeler (http://en.wikipedia.org/wiki/John_Archibald_Wheeler)), the universe undergoes an infinite series of oscillations, each beginning with a big bang and ending with a big crunch (http://en.wikipedia.org/wiki/Big_Crunch). After the big bang, the universe expands for a while before the gravitational attraction of matter causes it to collapse back in and undergo a Big bounce (http://en.wikipedia.org/wiki/Big_Bounce). Although the model was abandoned for a time, the theory has been revived in brane cosmology (http://en.wikipedia.org/wiki/Brane_cosmology) as the cyclic model (http://en.wikipedia.org/wiki/Cyclic_model).

Virgin Mary
04-11-2007, 04:28 AM
Nothing "exists" outside of space. Space defines what exists.

WarezKid
04-11-2007, 11:54 AM
Rofl, Before i die, i really want to know what past space or find another life :)

I always wanted to find out if god real before i die


Dunno how yet, just thunking

Jinc
04-11-2007, 12:15 PM
Surely there isn't enough mass to pull all the matter back once the universe has expanded to its supposed maximum capicity.

FlyingJesus
04-11-2007, 02:09 PM
Galaxies moving isn't proof that the universe is expanding, it could well be that it's always been infinite and the galaxies are just moving around inside of it. There's also a possibility I suppose of the universe itself being spherical, which could explain the differences in galactic movement, but doesn't really hold as "space" has no matter and so couldn't really be a shape.

-Xiangu-
04-11-2007, 02:35 PM
Surely there isn't enough mass to pull all the matter back once the universe has expanded to its supposed maximum capicity.

yeh my teacher was saying how we have only found around 10 percent of mass needed to pull it back in. but he was saying if we discover dark matter (or anti matter dunno what he said) then it could add up

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