Expansion of the universe?

Question

I am not familiar with physics or quatum physics so you'll have to forgive me if I don't ask this right.
If space is infinite and the universe is expanding in that "empty space" starting from the supposed "big bang" theory that would have started from a finite amount of matter that was "extremly" dense. Assuming that the whole universe doesn't collapse upon itstelf .... would matter eventually loose cohesion at an atomic level and cease to exist?

Answer 1

The universe is expanding, but the atoms are not; nor are the planets, stars or galaxies. Not even the galactic clusters. But the distance between large galactic complexes is increasing.

Answer 2

The universe isn't expanding but is rather stretching.

Imagine the surface on a tampoline. When you step on that trampoline the surface area will increase as the material stretches. The trampoline isn't expanding.

Space is no more infinite than earth as well. You can walk around earth and find no end.

Answer 3

I think this is correct. But the time scales involved are enormousd something like a googleplex years (10 ^(10^100)).

Answer 4

If expansion is continuous, matter would just spread thinner throughout the universe, but galaxies would just become farther apart. There is too much gravitational force holding them together.

Answer 5

Actually it is wrong to say that the universe is expanding. It is space and time that is expanding...