Still Going

[tph666]

The Universe is always growing.What will happen when we hit the end?I think everything will smash in everything like a 100 car pile up.And when its all pushed it explodes booom big bang.It happens over and over

[Phobos]

What end?

As described by Big Bang Theory, the universe is expanding, but it's not expanding into anything as far as we know.

Of course, there are various speculations about colliding universes, but nothing well supported by the available evidence.