Catastrophe here can’t reach other parts of a massive space

Theoretically or in practical humans do not have the energy enough to destroy the whole universe . All the nuclear weapons on earth can't even destroy the Jupiter.

But there can be many natural events that can cause the extinction of the universe . First of them can be a super super massive black holes .

Secondly there can be collisions of galaxies but the likelihood of it happening is very rare .

The important thing to know is that the universe is expanding , thus an apocalypse in part of the universe will not affect the other end.

But Scientists have a belief that once the universe stops expanding it will start contracting to the single point from where all it began , that is the reverse of big bang.