Ponyone: lol... I already pretty much said it woulnd't be infinite! I think you missed it cos it was one of the earlier ones :)..
PS: so far, as we now know, the universe is expanding and is ACELLERATING, which came as big big big shock.. cos very simple logic says other wise (when the big bang occured, a very large force pushed everything out, and everything has momentum, we have gravity, which acts to pull everything back in, and since force = change in momentum, you would expect to see a change in momentu, ie the expansion would decellerate)...
So they've ended up going back to one of einstines equations, where he "fixed" it (ie cheated, cos he believed the universe was static)... he then got rid of Lamda (the offending constant, where a force opposing gravity was acting to keep the universe unchanging), as hubble and co convinced him that the universe was indeed not static.. he called this his biggest blunder... Now they've had to go back to it, even though it's orignal intention was wrong.. This to me suggest that maybe we've got too ****y with our newtonain phsyics and maths, and there are other factors we need to acount for...