Smash_Factor t1_jdn9o1x wrote

It expands into nothing.

We have to assume that prior to the universe there was nothing. Literally nothing. Not even a big, open space. Just nothing. It's hard to wrap your head around "nothing". We think of it like an empty box. Thing is, the box doesn't exist and neither does the vacant space within it.

That's why the universe will expand infinitely. It's headed outward into something that doesn't exist.


Smash_Factor t1_j33ukjn wrote

They're bummed because they know the future is going to be amazing and they won't be alive to see it.

So they make up doomsday scenarios to make them happy.